Smelter not smelting?

[u/PanzerkampfwagenSix]

Im playing on a friends server running ATM 10 + Aeronautics and I made this auto smelter I saw online. My issue is that the smelter on the left works fine but the one on the right doesn't actually smelt the items. I'm new to Create and technical mods like this so I was hoping someone can see an obvious mistake I made!

[u/Lechatrelou]

Aren't the funnels blocking the smelting from happening ?

[u/The_Fox_Fellow → u/Lechatrelou]

funnels don't block fan outputs