"i am unable to post images of the project due to privacy issues."
Understood. But know that without knowledge of the actual Phases in your Project, I can only attempt to provide some guidance.
You will have to do some chronological coordination. You can recreate all of the Phases from both project in your MEP model, but put them in proper order based upon when the that work will take place. If two of the Phases will be under way at the same time, then you can merge those Phases into a single Phase in your MEP Project. Then you will need to configure the Phase Mapping for each link as explained in post #5 in this thread.
Thank you for your help
it has cleared up most of my questions and understanding of Phasing
I will check into the chronological coordination to verify all is good