I didn't notice that the guy Rick saw under the bed was in the group that met daryl but if it was the same guy it would kinda make sense to me about the different stories not happening in chronological order. there seemed to be too many in the group that met daryl. I wonder if this happened before they ran across Rick in the house, and daryl was actually in the house too?
Probably wrong!
Edit to add: in fact they did this in an earlier episode too when daryl and beth found the camp made by Tyreese's group, but you didn't Tyreese and the girls (where she killed the rabbit) make the camp until the next episode.