The exchange is really strange. During planning for Market-Garden Browning was told he would have to hold the Arnhem Bridge two days to which he replied they could hold it for four days. After the operation, when relating this to Urquhart, he insisted that he'd followed that estimate with, "But I think we might be going a bridge too far." So, the plan was to seize all the bridges but many, right up to Browning, seemed to have thought it was simply not possible, right from the outset.
It is significant that Montgomery refused to seek the advice of the Dutch Army officers in exile about his plan. As it turned out, an assault from Belgiumwas a standard problem on the Dutch Army officer's Academy test. When asked about it after the fact, a Dutch officer laughed and said, "Ah, Monty would have failed the Dutch Army Academy graduation exam. We all knew you couldn't fight up the route he choose - it was an elevated highway that exposed you to fire over every foot you moved. Our leaders had developed a route over a system of back-roads that were largely protected."
Bob