AI Beacons' UWB ranging - how precisely must two be aligned to 'range' each other?

Hello, I have a question about the UWB ranging functionality of the new AI Beacons - In the use case scenario of using only 2 AI Beacons to determine the distance apart from the other, how precisely must they be aligned to ‘see’ each other at longer distances such as 1 , 2 or 5 meters? Is it required to align a specific ‘arm’ of each beacon at the other?

I suppose my question could be restated as the following : Is the UWB antenna on the AI Beacons unidirectional or omni-directional?