[James2001]

The first would be that when I was growing up, CBBC, CITV, Nickelodeon and even the Disney Channel all had live, studio-based in-vision continuity between the programmes

So did Fox Kids in the early days and so did TCC before they spun off Tiny Living and Trouble (who both also had IVC)- in fact it was a major part of TCC at one point.

I think Cartoon Network were the only kids channel of the era that didn't have IVC- though they did have periods of live continuity with real time animation (which IIRC was done by the same people who did Tricky (and The Chart Show) on ITV- and of course the Tricky animations were re-used on Pop for years, though not live.