May be the 2nd one was a Pakistani pilot...
My guess...
Second one, a Pakistani pilot, taken to CMH (Military Hospital) by Pakistan Army, and DG ISPR didn't know by then that he was a Pakistani...
If Army was transporting that "Pakistani" pilot to CMH, the whole military command would have known immediately that a "Pakistani" had been shot down and was being transferred to CMH.
And we have ISPR (Inter Services Public Relations).. Our forces do not brief press by sending separate people.. ISPR is for all the three branches of military (PA, PAF & PN). In split seconds, PAF would have informed ISPR about the "Pakistani" MIA.. or KIA..
Remember, the press briefing happened when the second pilot was already in CMH.. after considerable time had passed..
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When an airforce loses a planes, it does not accept the loss of pilot immediately.. Pilots are trained to survive for days in jungles, keep maps with them, and return back in a few days..
Indian Air force also did the same.. in a hope that the two pilots who ejected from a twin seat plane would come back. Initially, Indian air force didn't accept the loss of first pilot.. Indians were challenging all over social media that pilots do not have mustache, or Abhinandan was a fictional character, until his video wasn't released with identification..
I am sure, if the videos of Abhinandans arrest hadn't surfaced, neither Indian Air Force not ISPR would have accepted..
ISPR, while giving the statement of two pilots, thought initially that the second one's video will also surface by foolish mobs, there was no point in hiding it.. however, when he realized that no video surfaced, and Indian Air Force also said that all the pilots are accounted for (hoping that the other two pilots would either return or die), he backtracked from his statement.