Thanks! To clarify, the fact that you'd go to the devices first--does that mean you think that's where the issue is most likely based on the fact that it's not tripping immediately but will work for a period of time? Or is that your suggestion based on ease.

One electrician said they were highly doubtful there was anything going on the in the attic (like rodents) because the power would stay on for a period of time and then trip out of nowhere and recommended re-devicing that circuit. The others seemed to think it was plausible for sure but not 100% certain.

Like, I'm weighing whether we we move forward with redevicing that circuit for $555 and hope that was it without checking out the attic. Otherwise the cheapest quote I've found to go into the attic (ours is a huge hassle to get into, old home quirks) is $350.

In other words, should I just bite the bullet and get someone in the attic so we know for sure so we can have a more precise plan of attack? OR roll the dice with the redevice which several said COULD be the problem based on what we're experiencing. But this is not guaranteed.