all it takes is literally one face hugger winning though. and when it comes to stealth, that's basically their default state - eggs included
not trying to nerd out too hard but death angels don't make sense in that they're biological plotholes. they can survive reentry and the vacuum of space but they can drown?
skin can take absurd damage and pressure but their insides are buttery smooth pause. they talk to each other but don't coordinate. perfect predators that have no sense of smell, etc. they're OP - til they're not.
so like....
if a xenomorph can break out of a technologically advanced prison and do other wild shyt, they're breaking into a death angel eventually too