A great disagreement

To have a great disagreement: First, have great agreement.

Find that one point, one moment, one thing - that both can say with great certainty: "On this at least, we agree".

Anything else is a tragic shouting match.

Three ways I try and find this agreement:

Time frame - check that all are arguing over the same time period. What should happen over the next 3 months is different from what needs to happen over the next 3 days. Start here, it's almost always different in everyone's heads.

Walk up - If we can't agree on how to do it. Can we agree on what to do? If not, can we agree on why to do it?

Walk back - where last did we agree? Can we get back there and see where we lost each other?