To make this more feasible and to give Germany more time, assume no Molotov/von Ribbentrop pact. Instead Hitler pressures the Poles to give the Danzig Corridor back...or else. Poland, having seen how the UK and France "helped" Czechoslovakia earlier capitulates and gives Hitler the corridor and are in turn given "free access".
Germany is free to continue its buildup until about 1941 maybe 1942 when it goes after the western nations and the Twins and this monster attempt a breakout.
Assuming this thing and possibly the Twins tried to break out into the Atlantic what would it take to sink them? Could the British sink them? What would be the cost for the British?