I don’t know if it’s a smokescreen, but there has been far from a correlation between whom the Saints interview and whom they draft. Teams are allowed 45 combine interviews IIRC, so they might as well talk to as many players as they can.
If you’re drafting 9th, to take a random example 😬 you never know who will drop unexpectedly, so you might as well talk to players that probably won’t fall to 9th. The Saints occasionally trade up 😡, so it’s worth meeting with the highest rated draftees as well.