Indeed not ~ and the nearest the script comes to it is spoken, not by Bogart, but by Ingrid Bergman: something on the lines of "Please play it, Sam; play it just for me". & it is Sam's complying with this request that alerts him to the fact that "of all the bars in all the world..."

Ah ~ movie magic. They just don't make 'em like that any more...

Sigh

~M~