In Grey v. First Nat'l Bank, 393 F.2d 371 (5th Cir.1968), cert. denied, 393 U.S. 961, 89 S.Ct. 398, 21 L.Ed.2d 374 (1968), this court stated that the amount of time allowed for opening statements and closing arguments is a question so clearly committed to the discretion of the trial judge that we would intervene only where there is an egregious abuse of that discretion.