The something off is called a cover-up. Just after 9 a.m. could technically be 9:55. Just saying. Bush's notification was on camera and he was notified immediately.
5 hour time difference between Detroit and HI. The plane landed at 12:51 pm EST, which was 7:51 HI time. Maybe dude was too busy or didn't want to be disturbed.
this site says it arrived at the gate at 12:01
http://www.flightstats.com/go/FlightStatus/flightStatusByFlight.do?airline=%28NW%29+Northwest+Airlines&flightNumber=253&departureDate=2009-12-25&x=29&y=8
which means it landed before that...