The window to the Nuggets’ playoff dream is closing. A 149-141 double-overtime loss to Miami Monday puts Denver two games out of the No. 8 spot in the Western Conference. For the Nuggets, who have not been good on the road (11-23), it was their fourth straight loss away. And their next five games are away from the Mile High City, including four against playoff-bound teams (Washington, Philadelphia, Toronto and Oklahoma City). Two weeks ago, it looked like they were riding on cloud nine, winning 12 of 17 — including a four-game road win streak.