Faq actually had precious little to say about touch spells, and only said one thing about chill touch, :
Q: How does the duskblade’s arcane channeling class feature (PH2 20) work with spells that allow multiple touch attacks, such as chill touch?
For a spell that allows you to make multiple touch attacks against separate creatures (such as chill touch), you only channel one touch of the spell through your weapon attack, regardless of the number of touches allowed by the spell. If the spell’s duration is instantaneous (as chill touch), its effect is expended by a single weapon attack, even if the spell would normally allow multiple simultaneous touches.
If the spell allowed you to make multiple simultaneous touch attacks against the same target, treat it as if you had targeted the enemy struck by your weapon with all the eligible attacks.
Bolding mine. I looked at it prior to my previous post to see if anything regarding
any touch spells had been put in. The Duskblade section was it, and it was kinda sparse.
If you're saying that
chill touch instantaneously makes your hand cold until you've touched 1 target per caster level, retaining the cold after each touch, over multiple rounds, until you've touched 1 creature per caster level, then I think you're wrong. I read it as you touch up to CL targets, all at once, making a ranged touch attack against each. You can't hold the charge because the spell specifies multiple targets touched. FAQ appears to uphold this view, but only peripherally; it's only in an answer to a question tangentially related to the question here.
Chill touch allows, even requires, that the touches all happen at once. It can't be held (the faq didn't say that, but the rules do.) It allows you to touch up to one creature per level as part of the spell; "target: creature or creatures touched (up to 1 per level)...duration: instantaneous...you can use this melee touch attack up to one time per level."
The spell has its rules, some of which contradict the limitations in the combat section ('up to 6 willing targets as a full-round action'), but none of which contradict the magic overview's duration section regarding holding a touch spell.
The rules you've quoted do not supersede the rule regarding holding a charge; the rules in magic overview are more specific in regards to holding a charge. It says nothing about willing or unwilling targets, and nothing in Touch Spells in Combat is contradictory to it.