Sorry to read of your hot start issue but it seems much is the dependence on critical voltages within modern vehicles and the difficulty even dealerships in tracking them down, all of which is a real pity.

For sure a resistance in a joint, or connection point in so many sensors may create issues to the extent that simple stuff can be overlooked, in one non Mog vehicle it is seemingly possible for a the heavy cable which connects both the starter motor and I think alternator to have a "T" joint in it, whether it is the joint that fails or the crimps which create the points of connection to the starter motor that may alter at the engine gains temperature I do not know, but the resultant issue is a very slow/sluggish starter speed when the engine is hot. Fitting a new original equipment cable from the manufacturer seems to resolve the issue on these particular cars...?

Also left of field, dependant on battery location and how happy it might be when hot as opposed to cold, might be an idea to check the voltage out after a run...?

One might hope attaching a code reader when the engine is hot might show up a sensor read back issue that may not readily appear when cold, though one would hope the ECU would capture and store any such data... BUT..?

Best of luck in resolving such a frustrating issue.