Wallace's times, especially those given when he read them when he was recalled were those locked in from the time he turned his journal in to Lt Maguire. That was probably before Reno wrote his own report claiming the the regiment was in the LBH valley by 8 AM. This 8 AM time had to do with the claims Reno and Benteen made that Custer's marches were excessive. Reno was so wedded to the idea that the day after Wallace's testifmony on recall Reno or his attorney finessed into the record something like, "As Lt. Wallaces said they crossed the divide at 10 AM." Reno was still trying to justify the statements made in his report even if he had to split the difference.
Custer's marches were about 30 miles a day, which is what Terry said Custer told him they would be.
The marches only come near to being excessive if you can crowd the march from the Rosebud to the divide into 8 hours instead of 12.
But Wallace's times could not be changed; Maguire had them. It probably would have made no difference had not Frederick Whittaker tried to make sense out of the times Reno reported and Benteen wrote publically about. For instance, if Reno's time was correct then Benteen's scout would have taken 7 hours.
The 2nd halt on the 25th of June was below the Crow's Nest. The Crow's Nest was not on the divide.
Fred posted a good photo taken from the Crow's Nest in which you can see the divide to the front. .