If you want to hear I-Calls on a 96, find out what freqs are used and program them (and only them) in a bank as FM and always scan that bank. Trunker will determine what freqs are used and some systems (my city) only use one freq.
Obviously a duty CC can't be used for I-Call, so if trunker does list a rotating CC, then you will need to lock it out in that bank when it has duty. If you don't have a way to find out which freqs are used, program all system freqs (including CC's) in a bank as FM and toggle the CC off/on each day.
Using the conventional method you would only know by the conversation because you wouldn't have a Talkgroup or RadioID to reference. As the comm changes between units you conventionally programed radio would resume scanning the voice frequencies and possibly lock onto a different talkgroup comm in process. You have no control except to keep pressing the scan button unless the I-Call is the only traffic on the system at the time. It's so much more easier just using a TrunkTracker with I-Call.