I know I could spend the rest of the night and finally come up with a solution that I like, but I’m putting it out there to see what others would do.
I have this image to go by, which shows the red disk at the end of the pipe:
And this is what I have to work with:
I have to deal with weird angles but that’s okay because I can preserve the axes of the two pipe ends in 2.8.
How would you make those tabs that extend from the red cap?