They could also have disappeared through one of the doors at either end of the carriage, while the train was still in motion, inside the tunnel, and in this way have found themselves in an adjoining car, where the man who was preaching wouldn’t have been, but not everyone likes to do this, because commuters are not supposed to do it except in emergencies, even if there are some riders who ignore this caveat every day, and even if, as well, any rule that pertains to it is largely unenforced.