Not for the first time you prove not having the basics : an earlier opening of the port of Antwerp would have been a shot in the dark: 1) the importance of Antwerp was secundary : in december 427000 ton was discharged at Antwerp for a total of 1.555.000 ton at the continental ports 2) this was less ,much less than was assumed by the planners :it was 13.370 ton daily while the assumption was 15000 ton,for january it was even worse :13970 for an assumption of 21500 3) already very soon,the storage capacity was full 4) clearance was essential : what remained at the port was not helping the front and,what happened in december : only 10290 ton was leaving daily the port= 77 % of what was arriving . 45 % was leaving by train,only 15 % by barge and 40 % by truck. And,of this 10290 ton not everything had as destination the front,the civilians and the economy also needed supplies,the same for the rear and support units . 5) what was determining was not what was arriving at the port but what was leaving the port . 6) If the port had been opened earlier,much less could have left the port,because the transport facilities were very hindered,almost inexistent :in september Belgium was paralysed 7)Antwerp was only useful in a strategy of ending the war in the long-term= in 1945,while MG was a possibility for ending the war before Christmas 8) Antwerp could wait,while MG could not : after 15 september, MG had no chance to succeed because of the weather and the increasing German strength And last point : it is not so that Antwerp could have been made operational much earlier: even if the approaches had been cleared a few weeks earlier, there still was the problem of clearing the Scheldt of the mines,something which took several weeks in the OTL . But of course, you will not let facts hinder the realisation of your imagination .