What aircraft did I see? (Airfoils on nose)

I live in St Louis about 12 miles from Lambert International, and a couple days ago saw an unusual plane. I’m not an aviation maven, so any detail of my description could easily be an error. The craft was flying low — not alarmingly so, but the noise made me look up. It wasn’t directly overhead, but my view was mostly of the bottom, almost nothing of the sides.

– The Big Thing: It had a pair of airfoils on the nose. At first I thought it could be a strange propeller, but no.

– Without the nose wings I would have thought it was a small two-engine commercial jet.

– I believe the wings were swept back — like a small commercial jet. Nothing about the wing shape struck me as odd.

– The only pictures I’d seen of planes with extra wings were of small experimental aircrafts, so I tried to guess the plane’s size. I have no training, but it looked like it might seat 30-70 passengers. That could be way, way off.

—The other odd thing: As the plane circled out of my view the back of the fuselage – where it tapered to meet the tail – was very narrow (like a swordfish or a P-38 Mustang?). It almost seemed to vanish for an instant.

This could have happened September 23, mid-to-late afternoon, but could have been the 22nd. Presumably the color was white, possibly silver. That’s probably all the info I have.

The only photos of large planes with front airfoils I’ve found are of the Piaggio P-180. I can’t rule out that the plane had rear-facing propellers, and could be convinced that the wings were not swept back, but do have trouble believing the Piaggio could look like an ordinary commercial plane from below.

I’m obviously guessing, but I think the Beechcraft Starship matches the description.
Beechcraft Starship - Wikipedia

There is a Piaggio that used to live in St. Louis when I did. I’m not there, but it may still be.

Most of the very few Starships sold have been withdrawn.

Just on a numbers basis I’d say Piaggio. Those also have a very weird distinctive sound. Which IIRC the Starship does not.

That does come close to my description, thank you Thumper668. However, I just found a view of the Piaggio that shows the back end of the fuselage — which is almost two dimensional. So, that’s almost certainly the plane.

Fair point. I should have read the whole Wikipedia article.