Comment by londons_explore

I understand what you're saying... But lets check.

Assuming the lenses are about 2 inches across (from photos) and they are 1310nm IR lasers:

https://www.wolframalpha.com/input?i=single+slit+diffraction...

So we have a minimum beam width of 0.0014 degrees.

And the speed of light round trip distance is say 3.3 milliseconds.

So the question is, does the angle between the satellites change faster than 0.0014/0.0033 = 0.42 degrees/second?

Well the worst case is one satellite heading north at 7.4 Km/s and another heading south at 7.4 km/s. Lets assume the satellites are 550 km apart (the distance between planes at the equator), and use the small angle approximation... Comes out as 1.4 degrees per second.

So yes, these satellites do need the ability to aim transmit and receive in different directions! (although they might be able to just defocus the beam a little when angles are changing fast to trade off throughput for design complexity)