If the first attempt was a gear up landing, the master warning for LDG GEAR NOT DOWN may have been inadvertently cancelled by one of them as they were no doubt already smashing it repeatedly for the over speed. Thereafter, all eyes outside and occasionally at the PFD with no one glancing at the ECAM.
Also, the A320 is relatively new to PIA. I doubt most captains have more much more than 500 on the type given seniority and the fact they don't hire DEC.
Unfortunately, this may prove to be another example of a super dangerous ex military jockey pushing things to the limit.