Keane blasted Hodgson for failing to change things around as Montenegro piled on the pressure.
The former Republic of Ireland captain said: "I'd love to know what happened at half-time as they were shocking in terms of concentration.
"I can't believe how bad England were in the second half. I thought Hodgson would make a change in the second half just to change the dynamic of the game and the flow.
"We were all watching it thinking a goal was coming and it is up to the managers to sense that danger and smell."