rits, much less impermissibly consolidate trial with the hearing on the preliminary motions. 5. 731 Fid 281, 283 (5th Cir.1984). 6. United States Y. Shenvood 312 US 584, 586, 61 S.Ct. 767, 769, 85 LEd. 1058 (1941k Zapata v. Smith, 437 Fld 1024, 1025 (5th Cir.1971); Caner v. UMW, 411 F.2d 767, 770 (5th C