>>6015759
Yes, that is true. But indeed, he did have the chance. He was informed of the plot and asked to take part in it - indeed, he was offered the position as interim president of Germany, should the coup have succeeded.
Apparently he turned down the offer with the motivation that murdering Hitler would make the Stab-in-the-back legend a reality, to be exploited by another fascist government in another 20 years to set off another war. Instead he suggested gradually depriving Hitler of power after negotiating a truce with the allies.
The problem with his plan was it would have required the invasion of Normandy to fail, thus nothing came of it.