Identify this open collector serial protcol
FWIW  I see Pulse distance encoding (PDE) with Req  low and ACK on 1st bit.


decoder uses length of 0V as 1T="0" and 2T="1"





Thus Tx = REQ + 3 bytes = A0.EA.5A  unless msb is in reverse order
Then Rx = has  2 bytes = 8B.74