i still like the idea that has been put up that alien3 is a dream of ripley in cryosleep, and resurection is a follow up of that dream.
as for bishop putting an egg up there:
that's impossible. bishop remotely operated the second dropship to get to the planet, and then they went to the sulaco.
the moment they stepped off the dropship and on the sulaco, bishop got tail-impaled and cut in half by the queen.
bishop could not have put an egg there, especially on the cieling, whilst simply handicapped by being in 2 halves.
also, when would have he done that? if he did this somehow covertly, then it surely would have been seen by ripley, newt,
or even hicks perhaps when entering the cryo chamber. also, the facehugger should have been triggered when they then
enter the room, not when they are vast asleep in the cryo, and rather impossible to enter the beds.
if he did it whilst everybody was asleep, then he somehow must have been able to 'awaken' or exit the cryobed, despite being
handicapped, then put an egg on the cieling, and went back in cryo? no.
there supposedly also was a fire aboard the sulaco which triggered the escape pod to be sent off. where did the fire originate from?
i doesnt make any sense whatsoever.
even if an alien would have been hiding aboard the dropship whilst the fight between the queen and co played out, protecting an egg,
then it still makes no sense why the alien put it on the cieling, and simply did not unboxed ripley, newt and hicks from their cryos.
there is simply no reasonable explanation for the egg to be there.
the only way to sneak out of that logical fallacy is to either keep completely ignoring it,
or to fix it by turning the alien3 and resurection movies into a dream of ripley.
have the story of alien 5 continue where aliens [alien2] left off, and have the sulaco reappear at the space station at the beginning of alien2 [aliens].
include the idea that there was an unprotected egg aboard the dropship where the queen hide herself.
still, it would just be a repeat of alien just on a big station with lots of people.