the Cybermen on the next episode aren’t really cybermen.
they are people dressed like Cybermen.
either attractions of the carnival or something else entirely
I rewatched the promo for the next episode of DW and I got myself wondering if the things in the TARDIS - those he can’t speak of - aren’t somehow related to the companions
like, an echo of them, stuck in there forever to haunt him
and that’s why he’s so scared of them