I can understand your concern over this gap. In my case, my EP accepted my Galaxy watch readout, sent as an attachment to an email to his office, at face value. Even I, untrained, could see that there was no apparent P-wave, and the R-to-R interval was all over the place. So, if you have a record from your watch, maybe that will help. Maybe, also, you can suspect a pattern or reliable circumstance when you're likely to get some ectopy, and if you set your watch to run an ECG for a while (15 minutes?) you may get lucky and have the depiction of a good long run that you can wave in front of him/her. Mind you, most watches are only 'allowed' to detect AF, not PACs or PVCs. I don't know enough about a Kardia to say it can/cannot do that, but I don't think it can. There are expensive monitors one can purchase, but unless you have maybe three leads connected to your chest in various places, it isn't likely to pick up PVCs specifically.

Or, maybe you can see another cardiologist who would try another monitoring device, say a Holter or a loop recorder/ICD...if you are up to that and want this settled for once.