Friends, according to the QU32 manual page 61:
Output AFL – This option sets the mix strip PAFL keys to monitor AFL (afterfade
listen). With this option turned off these keys monitor PFL (pre-fade
listen). The default is AFL so that you can check mixes after the master fader.
Input AFL – This option sets the input strip PAFL keys to monitor AFL (afterfade
listen). With this option turned off these keys monitor PFL (pre-fade
listen). PFL is the usual setting for inputs so that you can check and set their
gain before you bring up the faders.
Surely these are mutally exclusive, you can’t have Pre Fade listen and After fade listen simultaneously, it has to be one or the other, not both
