Our kitchen design has two side by side cooker hoods. Is there such a thing as an Inline Rectangular to Round 90 degree bend to put in the left hand hood as in the first image below or do I have to have them both bend/tee onto a straight run as in the second image. The blue circle is a soil pipe I have to get round and the dark brown lines are the wall surfaces of the kitchen.         [NOTE: I accidentally started this thread in the wrong section so am stoppi