question about the Motordyne XYZ pipe

Morfiy

Hey guys,

Could you help me to figure out something.
I went to bussines trip and I have received Motordyne XYZ pipe at home. So I called my nephew to get a pics of that. Once I saw, I found that some thing is different in there, namely: there is no connection boot to exhaust side. As you know the whole pipe consist of two parts, each part connects to each other by clamp which is pretty clear for me. But I can't get straight with how it connects to exhaust if it has rounded end at both sides? On nephew's shots there's a gasket for exhaust side "rombic" connection, but where's connection itself? Internet pictures shows absolutelly different, there's welded "rombic" connection from one side and round end (for clamp) on the other side of the straight pipe.
Sorry, may be it is kinda dummy question, but I can't check by my own now.
Will be appreciate if you guide me or explaine