Chain vaping will heat up the atty, which heats up a drip tip if there's no insulation between the tip and the atty (it'll also heat up the mod). Not sure if it actually gets hotter than the vapour (I'm quite sure that it does though, metal will retain heat), but it sure feels that way. In any case, for me, drip tips with insulation are more comfortable to use, and my vapour isn't particularly hot.
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You might have more luck talking to this