Ritual not triggering

[Uraxor]

possibly not a bug, but I have near to 0 experience with this, so I'd welcome an explanation please 

8
Uraxor uses [Ritual of Binding]
9
The essence of the charms are fusing together to form a new effect!
Uraxor uses [Preparation]
78
Uraxor uses [Ritual of Binding]
79
The essence of the charms are fusing together to form a new effect!
Uraxor uses [Preparation]
86
Uraxor uses [Ritual of Binding]
87
The essence of the charms are fusing together to form a new effect!
Uraxor uses [Concentration]

Caldera of Flame.
How come I got Preparation twice? missed the combo because of it =(
http://wl.attrib.org/estiah/replay/9dca79c

[Sparky]

Not a bug. As with all combos, you have a "combo window" of x charms you need to play your second Ritual within. It's a lot longer than it is for most combos, but still after some time the combo won't trigger anymore. It's simply that you've played too many charms between your first two Rituals.

[Uraxor]

zzz
pain in the ****

well, cheers.
I'll pray for better luck next time lol