I recall that in the first 2 seasons those lines were shown, they
involved TWO trucks for live video processing, and all the cameras had
to be outfitted with encoders to read the angle-of-the-camera-dangle.
My simple university graphics course in the late 1980s gave me an
appreciation of the computational power required for this at 30 frames
per second (or 29.97 in NTSC average).
all that said, it seems weird that they didn't have it live for your
games. Perhaps they lent the trucks to TSN in Canada to process the CFL
division finals :-)