Guild Wars 2

For some reason, even when in combat, while in the Heart of the Mists, these pet skills receive no increase duration whatsoever with all of these :

2x Runes of Water ( + 10% Boon Duration)
2x Runes of the Monk ( + 10% Boon Duration)
Concentration Training (II – Nature Magic, + 50% Boon duration on pet skills)
30 Points in Nature Magic ( + 30% Boon Duration)

Note : The boon duration on the pet tooltip on the pet skill is affected by 30 points in Nature Magic and +boon duration runes, but is NOT affected by Concentration Training. So I would assume these are suppose to affect it.

NONE of these have any effect on these 2 pet skills :

Furious Screech (Red Moa) : Fury – Base duration is 15 seconds. With the setup mentioned above, the tooptip says 22½ seconds (+50%). Yet, when applied while in combat, it only applies 15 seconds on myself and one near ally. Considering the runes, the 30 trait points and concentration training, the effective duration should be +100%, for a total of 30 seconds.

Protecting Screen (Blue Moa) : Protection – Base duration is 4 seconds. With the setup mentioned above, the tooltip says 6 seconds (+50%). Yet when applied while in combat, it only applies 15 seconds on myself and one near ally. Considering the runes, the 30 trait points and concentration training, the effective duration should be +100%, for a total of 8 seconds.

Mighty Roar (Jungle Stalker) : Might(x5) – Base duration is 10 seconds. With the setup mentioned above, the tooltip says 15 seconds (+50%). Yet when applied while in combat, it only applies 10 seconds on myself and one near ally. Considering the runes, the 30 trait points and concentration training, the effective duration should be +100%, for a total of 20 seconds.

Regenerate (Fern Hound) : Regeneration – Base duration is 10 seconds. With the setup mentioned above, the tooltip says 15 seconds (+50%). Yet when applied while in combat, it only applies 10 seconds on myself and one near ally. Considering the runes, the 30 trait points and concentration training, the effective duration should be +100% for a total of 20 seconds.

N.B.: Tests were made on golems and Chieftain Utahein in the Heart of the Mists.