Just as clarification, I'm certain this would be after Joker gets released from prison but before he leaves Tokyo, probably after the P-Thieves have their talk about going their separate ways in the Royal content. They state that this is after the MetaNav has disappeared, which also supports this theory
I mean joker had the cutscenes since the very beginning of the game in Royal, also the dlc doesn’t take place at the same time as the base Tactica game, personally I think it takes place either in January or February (which might be end of Royal I don’t really remember the dates)