LOS ANGELES — As Nuggets and Lakers alike filtered back onto the floor and started to get shots up, the tension in the sea-level air wasn’t a feeling of unfinished business, but rather un-started. The Lakers led 53-49, but Game 3 hadn’t truly tipped off yet. Every player, coach and spectator in Crypto.com Arena understood the reality: The second half is the battleground of this series. And within two minutes of this battle, it no longer mattered that Denver trailed the entire first half, because Denver was back in front, back in charge, back in control of this Sisyphean cycle the Lakers can never escape.