Should this one be dropped onto the list?
Why would Q post UNITED.png
then United_HK_IDEN_T3902.png afterwards- implying a connection between the photos?
United was still using the 747 for SFO-HKG route in early 2017 (after the time that it seems the second picture was taken)
If the Thank you USSS flight is connected to the 747 international flight, there would have been an overnight layover, according to the evening pic of Thank you USSS.
Gonna go ahead and presume it took over 9000 minutes each in mspaint.