From my experience, I would say it is not common practice to track the time to the degree that you are suggesting. However, doing so could provide some valuable insight into the time, capacity and benefits if there are key performance metrics that must be met as part of the deal, or to bolster and enhance the M&A strategy and process if multiple targets are being sought over time.
I think this tracking could be valuable to better inform on the time, resource and capacity needs to support the budgets, efforts, and ROI for future deals and planning. It would better support future playbooks, delivery timelines and impact assessments. I’m curious to see what others experiences and responses are and if anyone has any advice on how to achieve this.