"chain vape"? You mean you feel that your ecig is permanently glued to your hand? Never heard of such a thing on ECF! (just kidding!

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In my experience, when smoking I could (literally) inhale the cigarette in 30 seconds. When I vape, I take a hit at much longer intervals (for one thing, the atty doesn't keep up with constant drawing). So I feel that the ecig is glued to my hand and that I am constantly
vaping.
Now that you mention it, I will try to check how long it takes me to get about 10 to 12 draws on the ecig...