[Plugin: Previous and Next Post in Same Taxonomy] Multiple link

I’m sorry, but there’s no easy way to do this. You’ll need to do a bunch of additional queries to find the adjacent posts of the current one, and then the adjacent posts of those adjacent ones. I’d recommend starting with be_get_adjacent_post() function.

Actually implementing this solution is beyond the free support I offer. I’ll leave this thread open though in case someone else wants to help.