It could be both. It's according to their faith. "Then He touched their eyes saying, "Let it be done for you according to your faith."
Again, it's according to your faith. A healing line doesn't have to be necessary but it's a good faith builder. This example may have happened in one of R. W. Schambach's service. My wife answered the call to come up and receive prayer. She got up out of her seat and took a step or two and (right there) her healing was manifested. God saw her faith. She didn't have to go up to the healing line, praise God.
Hmm! Is that Christian someone we know that posts here? Anyway, this question has already been answered.
God is pleased with anything that involves applying your
faith whether it's for healing, deliverance, and prosperity.