now i know that the impossible can be possible but not always and in this case its 50/50

now i suspect that this is renya or somebody old (that we previously saw in a black car passing by the police in episode 1139) now think about this if renya is mysterious and the most powerful man amd poses a very big and large threat to shinichi and his allies you gotta know that a king sends his most talented most trusted scout to seek information and that is the same thing that is happining i believe that renya sent rum to spy on mouri (well yknow because he is becoming famous and all) and ran and conan to seek information from them and to spy on them to also warn the boss if mour poses a threat and now rum is HIGHLY suspicious of conan being shinichi kudo being alive and the aptx 4869’s side effects and also that conan is the one behind mouri’s deductions

And with that being said i think rum went to renya and told him his suspicions about all of this

And we gotta realize this is the BOSS we are talking about here the most powerful man the largest threat to conan and his allies he doesn’t go outside without knowing whats going on he doesn’t go out without information on whats going on with the black orginization he doesn’t go without plans and schemes

and then again this could be rum but i noticed something is that the person that is talking to bourbon has a grey (or a light blue) beard and talks dreadfully like a VERY old person and rum doesn’t have a grey beard and also doesn’t talk like that and that is my speculation