Nope. I said exactly what I meant. I never said anything about in the middle of combat. All I stated was how useful Detect Magic can be in a situation. If someone jumped the gun and thought combat had already started then that was their fault.
Revisionist history there.
What *actually* happened is FireLance pointed out that if combat started right away (common occurrence when meeting a dragon you might have noticed), then a dragon would likely not be using Detect Magic to be able to tell "what items were magical so was careful not to destroy them" (your words). That's when you started the goalpost moving.
All the dragon needed to know was if there is a presence of magic or not.
That's not what you originally said.