Looking over chanter abilities, I'm having trouble interpreting how long chant effects are supposed to last. Based on the in game documentation and the guides I've seen, my understanding is that each chant has a duration (6 sec for non-Troubadors) and a linger time (3 sec+modifiers) and that its effect persists over the length of the duration plus the linger.
Looking at individual chants, though, I see that many have an additional length stated in their description. For instance, Ancient Memory has the usual 6 sec duration and 3 sec linger, but its effect is described as 1 health restored per 1 sec for 10 sec. If the chant and its effect last for the duration+linger, what do the 10 seconds listed in the effect mean? Conversely, if the effect does last for 10 seconds, what's the point of the linger?