...I suspect it's not the case, but I'm still curious enough to ask -- outside of clips used on anniversary shows (I've Got a Secret and What's My Line? come most immediately to mind) or instances where the star of a show was too ill to perform (I have a Milton Berle Show on a DVD where this was the case), were kinescopes of live productions ever used for rerun purposes on the actual network line? Or were they strictly for (a) affiliates who time-shifted or couldn't carry a show live, or (b) reference purposes (documenting when an ad or sketch was run)?...