Actual Route for Hellig Olav 24 Mar 1927

Hello, having found that my father likely arrived on the Hellig Olav at Halifax on 11 April 1927, I am wondering if anyone can confirm the route of that passage. I have read that the trip from Christiana or Oslo to New York took 10-12 days for the trips up until 1925 reported on this site. But my father's (from Poland) passport also has two Danzig/Canada Immigration stamps dated 24 Mar 1927. I am guessing the ship travelled further to Halifax, and possibly Quebec City. However, I think I have also seen somewhere on a web site that another trip went from Halifax and then to New York. Any clarification for this particular passage would be appreciated. ....... Regards and espect, Robert Herman.