Do you need to go through security and collect your luggage?
How to transfer FRM one to the other? Bus/taxi?
How long it will take?
Do Turkish airlines provide a bus/coach to transfer you?
Asking as connecting flight to Ercan from SAW/Istanbul in September has just been cancelled with Turkish airlines

Spent the last hour on the phone with them, after being cut off once trying to get a new flight and the only one they could offer us on the same day was from Istanbul.
We were travelling with older relatives for the first time!
Any help or advice would be appreciated.