Until they were there.
Barely a moment and they were there, feet first on the carpet inside Jack's Cardiff flat. The tug had been immense and unpleasant, but that was fine. That was fine because they'd got away. They'd got away and they were (relatively) safe.
"Doctor you did it!" Jack beamed, spinning around to look at him, making himself dizzy in the process. "We're here, we're back. Oh you genius!"