but on that UA flight were probably in add some: DL-ff, LH-ff, etc, etc.

then I would like to know:
* how many of those miles are (by the airlines fault) never credited correctly?
* how many miles are only credited after claiming them extra later?
* how many miles are used each day/per flight for awards?
* how many miles are wasted and never cashed in?
* etc. etc. etc.