Well, I guess I need to defend my honor here! Jeff is of course correct. For the most part it was recorded traditionally onto a stereo time code Nagra, although by the final season my Deva 2 was my primary recorder with the Nagra as backup. I primarily used Neumann KMR-81s and 82s with Schoeps MK41s whenever I could. And also a lot of wires so definitely not 99% boom although massive amounts of classic films were recorded with one mic only, usually a Sennheiser 416. (The CAS podcasts are a terrific listen for some great stories.) My wires were Audio, Ltd. 2000s which served me well for over 20 years. My lavs were mostly Sonotrims, which I still love and use all the time. They were great on all the Polo style shirts the boys wore a lot. Were COS-11s around in 97?
But, regarding ADR, it was very rare that any dialogue was replaced, mostly because David Chase hated looping as did most of the cast. There was, however, a ton of dialogue added in Post, mostly placed on someone’s back or off screen. They also replaced a lot of the cursing but that was really after the show was syndicated.
Below is proof of wiring!