No Response Jammer and Ophelia not showing up after completing A Blast from the Past

[InertiaSelling]

Hi. After clearing Shaw High School, Ophelia said something along the lines of "let me talk to Jammer, I'll see you at your HQ". Since then, they have both disappeared from the school, and neither of them have shown up at any outpost. I have conquered another one to see if it would trigger anything, but nothing seems to happen. When spawn manually, Jammer complains about the minutemen, and Ophelia does not say a word.
It probably warrants a separate report, but for context, I must say that I have also encountered an invincible ghoul defender in Sunshine Tidings. So, maybe there is something wrong with my game / save. I don't want to clutter this post with unrequested information, so please let me know what may be relevant.

 

[ConvexFM]

As long as I can remember, I've had the same issue at any settlement with a third faction in combat. My example would be the stingwings at Taffington Boathouse, which unless killed prior to starting the raid, will be invincible. I've noticed it at the Croup Manor, Grey Garden (The Mr. Handy's), among other settlements as well. As with your first issue, It took around 3 days (in game) to get them to come back to HQ. Ophelia is not movable, and I had never moved my HQ, but it may be that they go to wherever your original HQ was. I never moved my HQ, so I can not say for certain this will fix your issue.

 

[InertiaSelling]

Thanks for your answer. Jammer and Ophelia eventually showed up.