I'm sure I was on that '79 crossing. If I remember correctly we came in late night/early morning and she was got alongside pretty much
at first light. I
don't think it was a deliberate ploy to avoid witnesses if they "kissed the pier head". Everyone on board would have known about it if they had anyway. It was probably more to do with the huge belt of fog over the Grand Banks slowing us down a tad. It may even have been done at that time to avoid other traffic in the channel.
Anyhow, whatever the reason, and however they did it, it was done with no drama that I saw. Those on the Bridge and those in the Engineroom may have very different memories of it though.
I must admit it was one of the most frustrating times of my young life. We were tied up in New York, capital city of the World,star of a thousand films, but it was silly o'clock in the morning. We weren' t going ashore for hours yet.