It's been a while. LOL I see the hoses. Can you follow them? There was a thermal vacuum control valve that ran to the intake and was designed to prevent the EGR from opening when the engine was cold (below 60 F if I recall). It would block vacuum to the EGR until the temperature was reached.
See if you can follow it to any point. If you look at the attached pic, it shows the EVAP system vacuum schematic. See if that helps.
Let me know.
Thursday, December 10th, 2020 AT 8:18 PM