There was a Hogwarts reunion at Broadway’s Golden Theatre on Nov. 7 when Daniel Radcliffe nipped backstage to congratulate former Harry Potter co-star Rickman on his Main Stem return in Seminar. The actors, who were all smiles in Rickman’s dressing room after the show, are both currently gracing the Great White Way — at least until Radcliffe bows out of How to Succeed in Business Without Really Trying on Jan. 1.

Radcliffe picked a good date to visit. Thursday evening’s performance of Seminar — the show’s first press night before its Nov. 20 opening — was canceled at the very last minute because Rickman was suffering from an acute respiratory infection. (It’s the first time in the actor’s storied career that he’s ever missed a stage performance.) In Seminar, the 65-year-old star plays a cantankerous literary genius hosting a private seminar for four aspiring novelists in the play and obviously does a lot of talking (as well as spitting out choice insults). A rep for the show tells EW that “we expect to resume performances tonight!”