Time literally stopped, everyone and everything froze.
That time stop, however, triggered Chaos Eyes, and the view of ligatures flowed effortlessly into Northern's visuals.
Because of the time stop, Cal's physical presence was unseen.
The whole point of Time Warp was to embed the user in the embrace of time itself, carrying them from one point to the other.
While it might seem instantaneous, or look the same as Shunpo, it isn't.
Shunpo worked with the concept of defying distance, but in the end, it is limited to how far one can see.
There is also a slight delay which can be caught by someone more experienced and sharp with battles.
Time Warp, however, was a dangerous ability that took one's physical presence out of reality, pausing time to prevent an outside reaction, and dropping the person's presence wherever they willed it to be while resuming time after the deed is done.
Which means no one should be conscious in this moment.