I have a peculiar view that the
way Dunkirk evacuation fails would matter, if the German army captures most or all of the forces, well they kind of expected that?
on the other hand the RN had massacred the German destroyers at Narvik and was able to conduct a successful evacuation from Dunkirk.
if the KM had better functioning torpedoes,
https://digitalcommons.georgiasouthern.edu/cgi/viewcontent.cgi?article=1599&context=etd, and made a better showing at Norway and Dunkirk, then the calculation for UK is much different.
(also would not discount the fact that
some British troops are going to be evacuated, while under this scenario
none of the tens of thousands of French troops evacuated historically are going to be? that would have to have some effects on relations)
still think the outcome would be a
Phoney Peace bookend to prior
Phoney War