Originally Posted by
ijgordon
^^
According to the article, the airlines are threatening to bill TA's the difference between what they book (e.g., two separate discounted one-way fares) and what the airlines want to extort them for (e.g., two combined one-way fares on a single reservation)?

If TAs try to circumvent charging that which the airline wishes to charge for a journey, then it is unsurprising if the airline states that it will debit them for the cost
As far as the lawsuit alleging collusion by the airlines go, it seems to be based on unsubstantiated allegations - there seems to be no actual evidence mentioned