kookaburras_sit_in_the_old_gumtree's Identifications

Eastern Brown Snake, eating an Eastern Shingleback (Tiliqua rugosa ssp aspera).
This sequence was taken over 35 minutes.
The shingleback was a very small one.
I estimate the snake was about 1.5m long.
We were surprised it seemed to be using a python like mechanism to kill it's prey. Guessing the shingleback skin was too hard for it's fangs to penetrate?
Any knowledge of this you have would be appreciated.
We believe this will sustain the snake for over a month.