If an unrevoked Defi connection still remains and something bad happened to that DeFi platform does this means that your recovery seed is revealed automatically this way?
No, your seed isn’t exposed but your connection & permission given and how you did it is a concern , this pose same threat on your wallet just like your seed getting exposed, the goal is always to drain your wallet with or without seed.
In terms of an airgapped device, is the assets on the device still safe? Since airgapped device works in a way that you still need the device to sign any transaction.
Cold storage may not matter much depending on the permissions, but whether or not it’s on an airgapped device, the contract will still need your seed if it requires approval..
If you can’t remember what approvals you gave earlier, it’s better to create a new wallet on your airgapped device and move your funds there.
Make sure to back up your seed before doing anything.