I agree, likely not worth splitting the PNR for 2 and a half hours, although this will be the tail end of the trip home after already traveling for 15 hours from Munich through Amsterdam, so first/business for the last leg would be nice. Traveling with my wife and four daughters (8, 10, 11, and 14), so it should be an adventure!
It definitely took some work finding business for the whole thing. I don't think most people traveling from MCO to LHR will get to see Charlotte, Madrid, and Frankfurt, like we are scheduled for!