If we start with 'At 9:32, a hijacker, probably Jarrah, made or attempted to make the following announcement to the passengers of Flight 93:Ladies and  Here the captain, please sit down keep remaining sitting.', does it make sense to conclude with 'Jarrah succeeded in convincing the passengers to stay calm thanks to his efforts at 9:32.'
At 9:32, a hijacker, probably Jarrah, made or attempted to make the following announcement to the passengers of Flight 93:Ladies and  Here the captain, please sit down keep remaining sitting.###Jarrah succeeded in convincing the passengers to stay calm thanks to his efforts at 9:32.