The stance on Live was almost always that you attempted MQs at your own peril. It was never supported that I ever saw, but rather came about from people being clever enough to figure out how NPCs accepted quest items and to use it to their advantage. Whether a quest was MQ'able or not usually just depended no what type of quest it was:
- If you turn in three items, it could likely be multiquested because you could have someone turn in one item and you turn in the other two.
- If instead you're given a box and asked to combine three items and return the box, there went your chance of any multiquesting.
I can't remember there ever really being "support" for MQing, but it was there.
Hope this helps. But probably not
