Being silly of course. There would be a snake of line, but in big tube type sets it wouldn't have any trouble fitting somewhere in the cabinet.
Another way with no delay line would be to present blue, green, red in sequence and the tube would scan them each in succession before ratcheting down to the next line. It would require a stairstep function generator for the vertical scan but that is doable with tubes. The corresponding monochrome would do the same except of course with only one gun.
Unfortunately, doing this would result in the set producing only 1/3 of normal brightness for a given amount of electron-beam power. Since pushing the electrons too hard will increase X-ray emissions, I wouldn't think that would be considered a good thing.