What’s this second torch for?

I’m not a welder, but I’m watching an episode of How It’s Made and they’re showing how a safe is made and the video shows a robotic torch cutting through thick steel. But it looks like there’s two blow torches not one. Any insights? Thanks!

I’m not a welder, but I’m watching an episode of How It’s Made and they’re showing how a safe is made and the video shows a robotic torch cutting through thick steel. But it looks like there’s two blow torches not one. Any insights? Thanks!