Multiple Bernardlines

At which point in time do Maeve and Lee enter the control room? It seems they are there the day following the gala ... but it also seems like [Bernard was involved in whatever happened there](https://www.reddit.com/r/westworld/comments/8eb7bd/every_scene_from_bernards_dream_freakout), despite having spent the night in the barn.

So is there pandemonium in the control room twice? Once before Mauve and Lee get there, and again in some later time with Bernard?

Or is Bernard experiencing the memories of multiple other Bernards?