The NFL's meandering road back to the nation's second-largest market wound through Chicago on Tuesday, with team owners hearing the competing Los Angeles stadium pitches for the first time. A league that goes to great lengths to avoid pitting owner against owner — revenue sharing, salary cap, and cross-ownership rules that preclude owners from fighting over the sports dollar in the same cities — is now bracing for a clash of the titans. "I guess you could use the metaphor of musical chairs, and there's a bit of that going on," said Steve Tisch, co-owner of the New York Giants...