Did George Bowyer disembark Titanic at Cherbourg?

I was rereading On a Sea of Glass today for research and in the footnotes, it stated that "according to descendants of George Bowyer", he did not leave the Titanic in the Solent via a pilot boat but instead sailed on to Cherbourg. The reason being they could save time lost from leaving Southampton on account of the New York incident.

If this is true, then it means obviously never departed the ship via the pilot boat but since there is no public account by him* of this happening. What is the main source for this aside from his relatives suggesting so?

*His book "Lively Ahoy" reportedly never mentions the Titanic or his connection to her.