DETROIT — Yes, Cleveland Cavaliers owner Dan Gilbert really rented 25 buses, filled them with nearly 1,400 people and sent them on their way to see his team win Game 7.But before we tell you more about that story …It was Saturday night at the Cavs’ hotel, and the team was having dinner. A potential last meal, if things didn’t go well the next day.Away from the rest of the players, coaches, families traveling and team staff — but in the same room — was a table at which coach Kenny Atkinson sat with president of basketball operations Koby Altman and Jon Nichols, one of Altman’s deputies in the front office, and Gilbert, along with his son Grant.It was an easy trip for Gilbert, who lives in a tony Detroit suburb, to stop by the hotel on the eve of a Game 7. The Cavs had been blown out at home in Game 6, after a string of failures to get out of the second round. And the team payroll of $229 million, before tax penalties, is the most expensive in NBA history.You might imagine the mood was tense. The stakes for the next evening at Little Caesars Arena were sure to be high.Yet Atkinson’s description of the sit-down with the boss, was, well, nothing like that.“It was the coolest thing,” Atkinson said. “It was like a surprise, he just kind of surprised us. And, you know, I am not having dinner with Dan every night. It was kind of special. It was cool that he did that, that he made the effort to come see us. And then, he just had some sage advice. This guy probably knows the team better than me; he knows these guys better than me.”Among the advice Gilbert offered Atkinson, the coach said, was that Jarrett Allen would be a key to Game 7.“He said, ‘You know who the key to this whole thing is,’” Atkinson said. “I’m thinking (James) Harden, (Donovan) Mitchell. He said, ‘The key to this whole thing, the spark for this is Jarrett Allen.’ I said, ‘Really?’ And that sparked me to run the first play for him. … I went to my room like, man, I’ve got to run the first play for him.