Transmit and receive at the exact time (start in parallel not in sequence)

I am using Adalm Pluto Rev. C for a Joint Communication-Sensing application where I need to transmit and receive a certain frame at the exact same time. By "the exact same time," I mean that the starting point in time for TX and RX should be the same.

I have tried to run TX and RX using parfor, yet it gives an error that the receiver is not connected. My interpretation is that MATLAB is sending the TX frames.

Is there any method to control Timing eather in Matlab or by Hardware?