Gloaming, Thsnks for weighing in here. I think I have found a clue. Since my once-a-month afib episodes are relatively brief, it’s something else than what we have discussed. I learned today that the Apple Watch requires gps to calculate VO2 max and therefore does not measure indoor activity such as my Peloton usage. So, what else in my life changed at the time of the crash? Well, I changed jobs and no longer ride my bike much outdoors. Not sure exactly how that would explain things, but it might be a clue.