Is there a difference between a Resident Director and a Supervising Director

I was at a tour recently and was talking to someone about what the role of a Resident Director was.. Most shows of course do not have a Resident Director; only the big name shows would go through the expense of having one. And i do know that the Resident Director sometimes oversees the Broadway and tour versions of a show, which is hard to do, since a person can only physically be in person at one show at a time. then i looked in the playbill and saw the title of "Supervising Director" . Is this essentially the same thing? I know these are strange technical questions, but i find these things fascinating. does anyone know more?

Ok, thanks i see - a "Supervising Director" is essentially higher up the food chain, answering directly to the production and producers and making big decision stuff. So in order for a Resident Director to evaluate a show and monitor it, they would have to essentially be in the audience, correct? i would think you could not evaluate a show from viewing it back stage or anywhere else. And a resident director's evaluation and monitoring would be quite comprehensive, correct? - meaning not just making sure lighting, cues, music etc is on point, etc - but also audience reaction - i.e.: is the crowd laughing tonight at certain lines louder, etc, is a certain performer getting louder entrance applause one night than the other? i guess the exact intermission time would be annotated as well - i would think the exact time between the "all go" signal from the house manager and time the show re-starts would be very critical - or maybe it's really not that big of a deal - i've just always heard that run times are very critical to monitor in shows. thanks, i know these are strange questions