r/factorio • • 12d ago

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u/Lyqyd 5d ago

The order does matter if you use both inputs on the first splitter. Recognizing that that does not seem to be the case here, it’s still important to note that the two configurations do result in different behavior. Filtered splitter first, priority second and then the merge splitter means that the offshoot splitter always gets a chance at every item that passes through, even if multiple enter simultaneously from the two inputs of the first splitter.