Originally Posted by
bocastephen
Read the announcement carefully - DOT is not saying they are blocking interline bag transfers between tickets, but that baggage fees/charges/allowances must be harmonized across an itinerary.
US has decided on its own to just stop interlining bags when a customer has more than one ticket on an itinerary - this is not a customer-friendly change, but is not mandated by DOT.
But why is fee harmonization across an entire itinerary any business of the DOT? This should be based on the passenger's elite status/benefits and class of service purchased with the first airline of travel.
How is one airline supposed to know another airline's fee policy to harmonize with them?