Crediting flights on same itin to multiple *A accounts
I searched but couldn't find an answer anywhere. I will be flying UA TUS-LAX-CLD and would like to credit the TUS-LAX to UA MP and LAX-CLD to TK M&S.
Some questions
1) Is it possible?
2) If not can I credit the whole trip to TK and still get the complimentary upgrade using my UA status?
3) What do I need to do to get it done?
Thanks for your help.