Originally Posted by cherokeesam
There's no indication whatsoever how much time passes. This is the irritating "montage" sequence where the movie more or less fast-forwards through the rest of the war and Cap's exploits. The gap between the train scene and the bomber scene could be days, or years....nobody knows.
The train montage comes BEFORE Bucky's death. Right after it, Schmidt mentions that their plan is on the eve of completion, and after Zola is brought back to London, there is sense of urgency. They're definitely racing against the clock at that point.