What time did Dahl and Coke believe they had until the Germans returned?

Dahl and Coke believed they had an hour and a half until the Germans returned. This specific duration reflects their perception of the situation they were in at that moment, indicating they calculated a narrow window of time to prepare or take action before the German forces might return. The emphasis on this timeframe showcases the urgency and tension of the scenario they found themselves in, revealing how they strategized under pressure while facing a significant threat. The details surrounding the timing contribute to the larger narrative, emphasizing themes of survival and quick thinking that are prevalent in 'Going Solo.'