“There’s no voice communications with topside because Stockton Rush, in his interview with Teledyne, said that he was tired of being interrupted from topside with update requests which is why chose to go with the Data Acoustic Modem that would transmit the position and depth of the submarine continuously so that he could enjoy his submarine ride.”
News Nation - Ashleigh Banfield's, "Why did they wait so long to tap?".
[Expanding the video description . . .] A Canadian aircraft using sonobuoys in order to search for the missing OceanGate submersible, detected “underwater noise” on Tuesday, June 20, 2023 - from where the submersible was touring the Titanic wreck site. Ashleigh Banfield interviews former USN submarine commander Capt. Don Walsh (ret.), who also participated as a technical advisor for James Cameron's 2012 solo dive in a large pod-shaped submersible, the DEEPSEA CHALLENGER, to the Titanic site.
Capt. Walsh tells Ashleigh Banfield about the communications procedures for submersible explorations, that have been a standard - communicating every 30 minutes. The TITAN crew would have, should have, communicated so, during the submersible's descent. Therefore, the support group aboard the surface ship, must know more than what has been related to the public.
Capt. Walsh mentioned that some of the communications tended to interrupt 'the pilot,' but are still a necessary standard of operations.
Geez, could you imagine if the Astronauts of Apollo 13 had insisted on this ???
"Houston, we just want to enjoy our ride to the Moon, so shut up"