Unpossible without hundreds or even a thousand people knowing that they switched ships. And would have taken way more time than available to make all the changes to the ship and repaint it. I dug into this a while back, and it doesn't pass the smell test.
... And it wasn’t even the Titanic.
Precisely! It was a very damaged Britanic, masquerading as the Titanic, after she had collided with a Royal Navy vessel.
Unpossible without hundreds or even a thousand people knowing that they switched ships. And would have taken way more time than available to make all the changes to the ship and repaint it. I dug into this a while back, and it doesn't pass the smell test.
I call BS on this "Myth".
Best you dig some more then! :)