Heathrow airport runways?

There must be something I’m missing. Why in infinite flight does Heathrow have 4 runways, but 2 in real life?

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There are two physical runways, but planes can takeoff on either end of each, hence the four numbers given in IF.

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Oh my lord above

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I am beyond stupid

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Until you ask you never know mate, you just made my night. Cheers

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Not a stupid question at all! Happy flying 🛫