Visiting New Zealand from Scotland for most of December. Flights out all fine on EK412 DXB-SYD-CHC but noticed on return flight we are booked as follows:
EK413 CHC - SYD
(1:30hr connection time)
EK417 SYD - DXB
(2:50hr connection time)
EK027 DXB - GLA

It was obviously our mistake not choosing EK413 for the Dubai leg but I contacted Emirates help desk about moving the SYD-DXB booking to EK413 so we don't need to change planes, hassle of security etc and they said it would cost £235 per person.

413 lands in Dubai 45 mins after 417, so reduced connection time for the Glasgow flight.

Is 90 mins enough time for the connection in Sydney?