Thanks RR I forgot PI and PSA were both DOH and MO was shut down, aircraft parked and employees on the street..... DOHKeeping my examples "in house".....Slightly outside your "20 year" window AAA/PI comes to mind..straight DOH from top to bottom. Also outside your window, and NOT arbitrated AAA/PSA...straight DOH from top to bottom. Two mergers, one of them at there on the top of the scale on size at the time..DOH. A little deviation on the very small integration of the Shuttle pilots..but even determining their DOH is still to this day in dispute. And of course we have NIC..but that never actually happened. Looks like 3 out of the last 4 here at U will be straight DOH. Others with more corporate memory can go back into the Seventies and talk about some of the other DOH mergers at AAA. I believe the Mohawk guys were actually out of business and on the street, and still got DOH with AAA..but I don't speak with authority on that one.
RR