I’ve seen multiple people make these two work... but personally, for me it did not. My rhomboid was atypically assertive, and after a week or so of frequent chasing my lineatus disappeared and came up crab food. He tolerated my jordani though.
I eventually decided to re-home my rhomboid, and will be introducing my new lineatus and a pintail to my existing jordani soon.
Best advice would be to use an acclimation box and see how the lineatus reacts to it before letting him go. My two were introduced to the tank simultaneously after being QT’d in separate tanks so I didn’t use my box, but it was definitely a huge bummer