Why is Simulcast such an issue for Phase 2 but not Phase 1?

https://forums.radioreference.com/threads/why-is-simulcast-such-an-issue-for-phase-2-but-not-phase-1.461290/

iirc P25 P1 is FDMA - P25 P2 is TDMA

interesting discussion - newer receivers and newer scanners might work better