Touroperator TUI is owner of Hapag Lloyd and what better idea than to station aircraft at Amsterdam for Dutch TUI passengers ? Two 737-400, D-AHLT & D-AHLJ, operated in 2001 with Netherlands titles from Schiphol to the various destinations in the Mediterranean area.
The idea lasted until Jan. 2002 when both 737-400s were withdrawn. The idea was to replace them by 1 737-800 for the winterseason, but Hapag Lloyd Netherlands did not return to Amsterdam.
The TUI passengers for the 2002 season were again booked with the Dutch charter operators: Martinair Holland, Transavia Airlines and Air Holland. Maybe Dutchbird got some too. Very likely these companies were glad to see a competitor go and offered "nice prices" to TUI !
Touroperator TUI is owned by the German company Preussag. Preussag also has a share in Britannia Airways (UK), Corsair (France), Neos (Italy) and White Eagle Aviation (Poland).