Another (and rather strange) thing I forgot to mention as to why I didn’t just use the TV footage only but rather went the hybrid route…the TV footage was somehow recorded too slow. When I had a scene with the score, I had to increase the speed of the TV footage anywhere from 2-4% to match the pitch of the blu-ray footage around it. It was almost like a PAL speed up problem, only in reverse. And the discrepancy also wasn’t exactly constant, so I had to adjust it for each edit to match what was around it. I’m not sure if this was how it was broadcast originally or if it was some deficiency in the recording / digital transfer of the VHS tape. So I guess when I weighed the pros and cons of doing a hybrid, I came out with:

Cons:
Video / audio format shifts.
Pros:
Better PQ for 140 of 169 mins.
OAR for 140 of 169 mins.
5.1 AQ for 140 of 169 mins.
No pitch issues for the TV footage.

…and chose the latter.