Would this be back-to-back ticketing?
TYS-ATL-LGA on May 27 (Confirmation AAAAAA)
LGA-MSP-LAX on May 28 (Confirmation BBBBBB)
LAX-JFK on May 29 (Confirmation BBBBBB)
LGA-ATL-TYS on May 31 (Confirmation AAAAAA)
Obviously it's cheaper as two reservations, but I don't want to risk breaking DL rules. Thanks!