One more datapoint if it helps - I was out of country for 5 weeks and my car was charged to 80% when I left. It was not plugged in.
Out of curiosity on how the car is doing, I used to wake it up remotely 1-2 times every week to check on battery charge, interior temperature.
After 5 weeks by the time I returned home, it was down to 69% SOC. Not bad I think, given my continual communication.
Edit: I also installed a couple of OTAs during those 5 weeks. So that might have contributed to the drain as well.