communication stones - possible plot hole?

[Jper]

No i mean the aliens were already once in destiny.. and found the device.. And iirc rush did mention they had been there before.

Not that I know off. I think you need to go look for that quote. As far as I know Rush said they know of Destiny's existence. They seen it from the outside. They've attacked it before. But they've never been on the inside.

[garhkal]

I'll give you that.