After my first year of riding I'm now trying to get more structure into my training with Trainingpeaks.
I'm new to all of this and never spent attention to TSS.
I usually double-record my rides in case I need a backup (with Edge/Zwift and my old Fenix; using the same sensors).
If the ride is split (ie multiple rides on Zwift or if I have to wait for my friends to show up outside), I do not touch my Fenix and it records one long activity - while I start/stop my Edge each time.
When cleaning up afterwards I usually delete the long one.
In Trainingpeaks I'm not sure which one to delete, because the TSS isn't the same.
ie:
the all-in-one-recording shows 178 TSS
the sum out of way the