There is one other situation that isn't addressed in this TAFB discussion.
It doesn't happen often, but occasionally a multi-day pairing will be rerouted into Memphis due to freight\plane availability.
And when that happens, your trip is over.
The most lucrative trip (time away from home math here) happened back when I was a DC10 SO, I was on a tour america pairing and we landed in LAX with a contact CRS message. Told to hang out at the airport and in an hour or two we were returning to Memphis.
30'sh CH trip effectively turned into a PM O&B.

Currently I have buds on the 777 who also, rarely, get revised to return early to Memphis.
And once that's done, trip is over.

No, go to the hotel for a day or two of HSBY, just go home.