Just to clarify if he had the comms as everyone is saying, he would have been fully aware of all the other traffic (including the meatbombs) and under the blind assumption everyone knew he was there. Correct frequency wrong comm means he can hear you, you can't hear him. Unless he asks someone else their ETA/exact position etc he would have no idea no one can hear him. Remember most PPL's are !!!! scared to do anything beyond the norm and most have not been taught to question fellow aviators or speak up if in trouble for fear of ridicule. Some are of the opinion that CPL's are the kings and their men so get out of their way, ATC are omnipotent and can see all and CASA are the gods that enforce the law by wielding an indiscriminate sabre of justice!
If he's hearing your calls and assuming you can hear his he probably just hoped you'd work it out and he wouldn't get in the way since you said nothing to him.