Is AUS TL110, all the times? Is your flag on 737 set up correctly all the times?
Not trying to poke you, but rather thinking out loud what is different in places where the best practice crystalized differently. In line with ICAO's to set QNH with the receipt of altitude clearance, (where intermediate level-off above TL is expected the TL will need to be specified in that clearance by ATC)
Text is parenthesis is mine.