Ohalos 11:4

If a person was looking out a window and he overshadowed a funeral procession, Beis Shammai say that he doesn’t convey impurity but Beis Hillel say that he does. They agree that if he was wearing his clothes or if there were two people one above the other, then they convey impurity.

Ohalos 11:5

If a person was lying on the threshold and a funeral procession overshadowed him, Beis Shammai say that he doesn’t convey impurity but Beis Hillel say that he does.