Seems odd.
1) why request a flag after the fact and if you trying to make a message, you would take your own flag with your own message surely?
no he had a flag thats currently up there in the window held by hostages, hes requested a flag be sent to the pm
2) if it was not a robbery then what is the objective?
same as most other hostage situations to make a list of public demands that have to be listened to/responded to.
3) the target is dumb as you can get, a chocolate cafe? realy?
its a busy location with lots of civilians (mostly western/tourists making international) right across the road from the channel 7 TV station, so ideally im guessing this was meant to be quick and end up filmed/on air before the police intervened and he chickened out and is now panicking.
if it was a Robbery why walk in with a terrorist flag and take hostages?
And cafes are quite common targets for terrorists HAMAS/Palestine has blown up a few,m low security and lots of people in one place.