analog/digital conversion

Hey all,

I was wondering: do the LCD manufacturers account for the additional time delays caused by analog->digital conversion? I mean the addition of any sort of circuitry will introduce some time delays...or do they just multiplex the analog and digital inputs at some point? If that were the case, it seems like a digital only monitor, then, would have slightly faster timings than a digital & analog monitor (for lack of muliplexing). Assuming, of course, that the video card output is in digital format.