Originally Posted by
NOLAnwGOLD
So to max your miles on CO, I'd fly as much of CO as you can.
Maybe this CO to India
KLM, AF, NW/Delta, or other ST partner (is there a CO codeshare you can book) back to Europe
Return from Europe on CO or star alliance.
Try having your agent piece this together or expedia/travelocity.
If you're willing to write off the India-Europe segment anyways I'd book it on LH. There is a chance that you actually will get credit and if you don't you're no worse off than having booked on DL/AF/KL.
You can pick up CO from FRA back to EWR or (later in the year, I don't remember the exact start date) to IAH.