It is correct that Ben did not appear for the last 2 seasons, but Janice did not "appear" in Season 6, only her voice on tape for Chandler and Monica's mixtape.
Also wording on number 4 is confusing since Mona appeared DURING season 8 and not after.
I love the idea, but the format is very confusing. I missed a lot of questions by misinterpreting. If the confusion is on purpose, OK, if not, I recommend you change the phrasing of some questions to make it clearer.
Also wording on number 4 is confusing since Mona appeared DURING season 8 and not after.
Solid quiz though