Compact Machines version: 1.12.2-3.0.18-b278
Forge version: 1.12.2-14.23.5.2847
I am not using Optifine: I use optifine
Link to Crashlog: N/A
Screenshot (if possible): N/A

Whenever I try to output items from Thermal Expansion machines like pulverizer, saw mill etc, going to a itemduct going inside a tunnel with cache(just one side), it is only capable of doing it one at a time, I can confirm the output of other machines by simple toggling the itemducts on or off.

If I have 5 machines that outputs 5 different items at a time going to one side of compact machine using an item duct, I shouldn't need to use different 5 sides of the CM just to get all the outputs inside the CM. How do we deal with this?

Likely an issue with how Thermal is handling the item capability (tunnel interactions). Will try to verify when available, to see if we can reproduce easily enough to fix it.

This can't be verified until the issue's author gives a proper setup, as it is not feasible for 5 different types of items on one side of the tunnel to go into a single cache. For reference, caches support only a single item type but hold a lot of it. We either need screenshots or a more detailed explanation. This isn't reproducible in its current state.

You should probably respond on GitHub itself as you left in your email signature, if you care. Still waiting on that detailed setup. :)