Assume a MU-MIMO capable wifi access point with two external antennas. The antennas are placed in two different locations. It's not possible for a wifi signal to reach (via air) from one location to the other.
Given this setting: Should the access point be able to serve clients at both locations simultaneously? (E.g one client at one location, one client at the other)
Put differently: Do clients need to be able to receive from both antennas of that access point in order to establish a connection?