Installed DCI first timer, rear cone doesn’t look like install pics
 

I went and installed the rear first instead of the front — it’s angled a bit down. Tube only fit in about 1/2inch into rear inlet but I think clamp is tight and sealing well. Front seems/looks fine.

Should I have any concern here?

Will note that my test drive was fine and the car isn’t throwing any codes. Induction noises sound great and car feels a little bit faster.

As long as the clamp is secure and the intake can't be easily removed...you're good.