Flew UA1 twice. I bought those as a RTW in D class. I preferred flying East to West since it was easier on my body with the time changes that direction. I got UG to F with a "Sales Comp" from UA. I stopped off in HKG and LHR for work. Did it over a 12 day period.

B-767 between DEL-LHR-JFK-LAX.
B-747 between LAX-HKG-DEL.

Maybe with the merger, this can return using DEL again or better yet, DXB.