Re the QNH read back, perhaps have a look at the report on the recent A320 incident at Paris with heading:
Incorrect QNH information, RNP approach with LNAV/VNAV minima conducted below the descent profile, near CFIT, go-around performed at low height before the runway without visual references, second approach performed below descent profile
Link to BEA preliminary report:
https://bea.aero/fileadmin/user_uplo...N_finalise.pdf