I think they have deployed all vessels to the area where they think the most recent noises came from.
There is a timeline in this
article that shows that during mid-Wednesday they were deploying all vessels to an area where .... "further banging noises are heard as all available search assets are redirected to that area".
A deep-sea explorer, David Gallo, says that it will take hours to bring the submersible up when they find it, that they need to make some assumptions, get everyone to the spot, and go down looking with the intent to rescue right away.....
“We have to, at this point, assume that that’s the submarine and move quickly to that spot, locate it and get robots down there to verify that is where the submarine is.
“They’ve got to go fully ready as if that was the sub because it takes a while to locate it and get it up to the surface, it takes hours.”
Debris from the imploded Titan submersible was recovered from the ocean floor last week
www.independent.co.uk