Mate, it's only hearsay, but the guy who supposedly bred the 1st Bull Arabs, told his mates that his bull bitch had been mated by his old dog "Arab" !! It wasn't a Saluki, just the name he called the dog ! The "BullArab" never shows any Saluki traits, and I doubt that Salukis were available at stud, especialy to pig dogs, back in those days !
Cheers.