OOB plays - TO timeframe and delays

[bd41flpk]

May I solicit rules and interpretations on these plays:

(1) Team-A (behind at the end of a game) scores a 2-point basket and then Team-B quickly grabs the ball and (a) is on the way with possession of the ball OOB OR (b) already OOB with the ball - BOTH prior the official starting the 5-second count....can Team-A legally still call a TO ? I say yes as the official has not yet started their 5-second count. Rule/Opinion?

(2) Team-A scores a basket with 10.0 seconds left on the clock - Team-B has no more TO's. Team-B then delays on taking the ball OOB for a throw-in. Team-B finally picks up the ball for a throw-in @ 7.0 seconds. Do you: 1) start the 5-second count earlier OR 2) blow the whistle to stop the clock to issue a 'delay' warning to Team-B?