PJSIP and CHAN_SIP cannot share ports, so long as they are different they both should work.
For example, if I want phones and softphones, to use PJSIP at 5062 (TCP and UDP) and SIP Trunks/Other SIP devices to use CHAN_SIP using 5060, I would configure the listening port and interface(s) in Asterisk SIP settings.
When choosing (0.0.0.0) binding in the extension, it tells it to allow that extension (user or device) to come in on any interface with PJSIP bound to it.