> just go talk to the stakeholders - product/sales team - ask them if the delay could be potentially customer losing

In my experience, sales team rarely have any incentive to help out here. They almost always say that delay will create problems and they quantify in terms of dollars e.g. If X is not done by this date we will lose Y dollars. That Y number is almost made up to make things more urgent.

Actually, I have seen sales blaming lack of sales numbers on engineering because the delivery was "too" late.