It is similar to how they got Streets of Rage 4 out quickly for Switch but my copy was tied to Panzer Dragoon and I had to wait four months before they both shipped.
Consider yourself lucky. I was in a similar boat, only I also ordered Streets of Rage 4 and Panzer Dragoon in the same shipment as Tiny Metal. I only got them about a month ago. Had to wait the better part of a year for those games to ship, all because of Tiny Metal, and how long that one game took to finally be produced physically.
These days I've avoided bundling my games up TOO much. I don't mind combining shipments to save on shipping, but I'm not as obsessive about it as I used to be. So long as I can get two or three titles wrapped up into the same shipment, I'm content. I don't wait for a few weeks to bundle up four or more orders into the same shipment now. I don't want to get caught up in the same kind of delay.