Hallo Mike -
There is a newspaper item headed 'Interview with Mr Lowe' which is nothing of the sort - it's quite amusing! Lowe made a few remarks to a reporter to the effect that he, like his fellow officers, was not giving interviews, but (either not yet knowing enough about the habits of journalists, or perhaps not caring) went on to make a few comments about the American press that, of course, were reported.
Lowe seems to have been the most prone to making comments that were picked up by the press - it began in America, continued through the duration of his stay there, and even occured in the aftermath when he returned to Barmouth and reporters recorded his remarks at a couple of ceremonies held to honour him. I do suspect that in at least one instance, while still the US, he was possibly deliberately making a statement that he wanted reported to pressure Senator Smith on a particular issue. For the most part, however, there was no substantive interview as such, and those remarks he did make that were recorded do not shed too much light on the actual disaster (although they are highly significant in terms of revealing Lowe's character, personal response to the sinking, and the behind the scenes post-sinking politicking).
There don't seem to be many interviews with the officers in the more immediate post-sinking era, although
Lightoller and Boxhall both gave later interviews, Boxhall both in print and electronically. I haven't completed my trawl through all their local papers, though, so am still hoping to turn up at least the odd nugget of information. While the local papers did have some interesting biographical background and reported on their evidence and sometimes specific incidents or comments, unfortunately they don't seem to have granted interviews. I believe you are correct and they were instructed not to do so - certainly Lowe's subpoena (a handwritten document from the office of the Receiver of Wrecks) was given to him as soon as he stepped off the
Adriatic. Harold Bride's father mentioned a few weeks later when he arrived in the UK that Harold had been ordered not to talk to the newspaper men - I imagine a similar directive was given to the deck officers.