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That sounds confusing to me too. The comparitor has only one output (for the two inputs) and power connections - that's it. A total of 5 connections: power (2), inputs (2), and output (1) per comparitor.
Now, the 393 has two comparitor so there would be 8 connections: Inputs for section A (2), inputs for section B (2), output for section A (1), Output for section B (1) and power (2).
I suggest you get a current data sheet by doing a web search for "LM393 sheet."