Table 1 Condensed research protocol Part...

Table 1

Condensed research protocol

Part	Research activity	Respondent – Position	Company	Interview/focus group (duration)
Part 1 – An introduction workshop	(1) General introduction to the study, including its purpose, the research design and the data sought (2) Presentation on the SLTs and their implications for ROI to increase the respondents' understanding of SLTs and create a common understanding (3) Opportunity for the respondents to ask any initial questions (4) The workshop was audio recorded and the researchers listened to the entire audio file in order to identify any possible misunderstandings	R1 – Inbound/outbound manager	PumpCo	Face-to-face focus group (80 min)
		R2 – Project administrator, pump and motor division	PumpCo
		R3 – Senior supply developer	TelecomCo
		R4 – Operational developer	TelecomCo
		R5 – Logistics manager	LuminaireCo
		R6 – Master planner and planning team leader	LuminaireCo
		R7 – Team leader, operational purchaser	LuminaireCo
		R8 – Senior logistics manager	AircraftCo
		R9 – Demand planner, sales and operations planning	TurbineCo
		R10 – Strategic logistics developer	TurbineCo
		R11 – Strategic purchaser	TurbineCo
Part 2 – Combined individual and group interviews	(1) Semi-structured interviews on each SLT's implications for the three absolute measures related to ROI (2) Used the interview protocol consisting of 36 questions per interview. The 36 questions were based on the same formulation, where only the SLT $(E, I, S, D, A_{S}, A_{D})$ ⁠, absolute measure (revenue, cost and investment), and reduced or prolonged were changed until every possible combination was asked. The questions were “If $E / I / S / D / A_{S} / A_{D}$ is prolonged/reduced, what are the implications for revenue/cost/investment?” (3) Probing questions to follow up on interesting leads (4) Audio recordings transcribed and notes taken during interviews were analysed (within-case) after each interview (5) Offered the respondents the opportunity for further comments and clarifications (data checking) (6) Cross-case analysis using the results of the within-case analysis	R1 – Inbound/outbound manager	PumpCo	Face-to-face individual interview (85 min)
		R3 – Senior supply developer	TelecomCo	Face-to-face group interview (98 min)
		R4 – Operational developer	TelecomCo	Face-to-face group interview (98 min)
		R5 – Logistics manager	LuminaireCo	Face-to-face group interview (95 min)
		R6 – Master planner and planning team leader	LuminaireCo
		R7 – Team leader, operational purchaser	LuminaireCo
		R8 – Senior logistics manager	AircraftCo	Face-to-face individual interview (92 min)
		R9 – Demand planner, sales and operations planning	TurbineCo	Online group interview (79 min)
		R12 – Manager, sales and operations planning	TurbineCo	Online group interview (79 min)
Part 3 – A workshop dedicated to discussing and further analysing and updating the results of the cross-case analysis	(1) Presentation of the results of the cross-case analysis (2) Opportunity for the respondents to provide their feedback on the results and discuss them with one another and with the researchers (3) Probing questions to follow up on interesting leads (4) Audio recording transcribed and used to further analyse and update the cross-case analysis (5) Compared the results with the conceptual module (pattern matching)	R1 – Inbound/outbound manager	PumpCo	Face-to-face focus group (148 min)
		R2 – Project administrator, pump and motor division	PumpCo
		R4 – Operational developer	TelecomCo
		R13 – Global supply chain architect	TelecomCo
		R5 – Logistics manager	LuminaireCo
		R7 – Team leader, operational purchaser	LuminaireCo
		R8 – Senior logistics manager	AircraftCo
		R10 – Strategic logistics developer	TurbineCo
		R12 – Manager, sales and operations planning	TurbineCo

Part	Research activity	Respondent – Position	Company	Interview/focus group (duration)
Part 1 – An introduction workshop	(1) General introduction to the study, including its purpose, the research design and the data sought (2) Presentation on the SLTs and their implications for ROI to increase the respondents' understanding of SLTs and create a common understanding (3) Opportunity for the respondents to ask any initial questions (4) The workshop was audio recorded and the researchers listened to the entire audio file in order to identify any possible misunderstandings	R1 – Inbound/outbound manager	PumpCo	Face-to-face focus group (80 min)
		R2 – Project administrator, pump and motor division	PumpCo
		R3 – Senior supply developer	TelecomCo
		R4 – Operational developer	TelecomCo
		R5 – Logistics manager	LuminaireCo
		R6 – Master planner and planning team leader	LuminaireCo
		R7 – Team leader, operational purchaser	LuminaireCo
		R8 – Senior logistics manager	AircraftCo
		R9 – Demand planner, sales and operations planning	TurbineCo
		R10 – Strategic logistics developer	TurbineCo
		R11 – Strategic purchaser	TurbineCo
Part 2 – Combined individual and group interviews	(1) Semi-structured interviews on each SLT's implications for the three absolute measures related to ROI (2) Used the interview protocol consisting of 36 questions per interview. The 36 questions were based on the same formulation, where only the SLT $(E, I, S, D, A_{S}, A_{D})$ , absolute measure (revenue, cost and investment), and reduced or prolonged were changed until every possible combination was asked. The questions were “If $E / I / S / D / A_{S} / A_{D}$ is prolonged/reduced, what are the implications for revenue/cost/investment?” (3) Probing questions to follow up on interesting leads (4) Audio recordings transcribed and notes taken during interviews were analysed (within-case) after each interview (5) Offered the respondents the opportunity for further comments and clarifications (data checking) (6) Cross-case analysis using the results of the within-case analysis	R1 – Inbound/outbound manager	PumpCo	Face-to-face individual interview (85 min)
		R3 – Senior supply developer	TelecomCo	Face-to-face group interview (98 min)
		R4 – Operational developer	TelecomCo	Face-to-face group interview (98 min)
		R5 – Logistics manager	LuminaireCo	Face-to-face group interview (95 min)
		R6 – Master planner and planning team leader	LuminaireCo
		R7 – Team leader, operational purchaser	LuminaireCo
		R8 – Senior logistics manager	AircraftCo	Face-to-face individual interview (92 min)
		R9 – Demand planner, sales and operations planning	TurbineCo	Online group interview (79 min)
		R12 – Manager, sales and operations planning	TurbineCo	Online group interview (79 min)
Part 3 – A workshop dedicated to discussing and further analysing and updating the results of the cross-case analysis	(1) Presentation of the results of the cross-case analysis (2) Opportunity for the respondents to provide their feedback on the results and discuss them with one another and with the researchers (3) Probing questions to follow up on interesting leads (4) Audio recording transcribed and used to further analyse and update the cross-case analysis (5) Compared the results with the conceptual module (pattern matching)	R1 – Inbound/outbound manager	PumpCo	Face-to-face focus group (148 min)
		R2 – Project administrator, pump and motor division	PumpCo
		R4 – Operational developer	TelecomCo
		R13 – Global supply chain architect	TelecomCo
		R5 – Logistics manager	LuminaireCo
		R7 – Team leader, operational purchaser	LuminaireCo
		R8 – Senior logistics manager	AircraftCo
		R10 – Strategic logistics developer	TurbineCo
		R12 – Manager, sales and operations planning	TurbineCo

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