...and verification of the corner point were "brilliant" stellar observations afterwards.That's why you cannot simply trust what people say without a way to verify it somehow.
If Boxhall said (afterwards) that the Titanic passed the corner 23-50 minutes before 05:50 it means the stellar observations confirmed (verified) his point of view, doesn't it?
BR15672. If she was going 22 knots and ran past the corner for 50 minutes that means she?
- I did not say 50 minutes.
15673. No, I know you did not?
- I do not remember what time it was but it was some considerable time; the difference I make between my time and the time that was given in the book - well there was such a big difference that I considered it worth mentioning to the senior Officer of the watch.