Whatever is said, careful if you are offered a job as a DEC, coz it will turn into an A320 captain seat, crappiest position in EY....
A340 F/o's make more money than any A320 captain, flying twice less or even less, with no headache .
On A320, be ready to be living like an owl most of your time...... Flying up to 90/95 hours, minimum rest, most flights leave at 0200 AM local time up to maximum duty, with exhausted F/O's as well.
No requested days OFF, hardly any lay over,
All the requests you may have will end up having the same answer :
Due to operational reasons, your request couldn't be granted.
Operational my a
s......, lack of proper planning, poor management it is