Arachnos Soldier Fires Two Attacks In One

[Rudra]

With very careful (or accidental in my case) timing, it is possible to fire off two of the Wolf Spider's attacks at the same time. Twice now, on a new Soldier of Arachnos, I fired Single Shot followed immediately by Burst, and only Burst is seen firing. Looking in the combat log, each time it shows "You activated the Single Shot power." followed by "You activated the Burst power.". No gaps for other notices between them. Then it says the attack roll result for both powers back to back with no room for other notices. Then it shows the damage result (if hit) for both attacks.

 

Both attacks are rolled into Burst's animation. I've been trying to replicate it intentionally, but so far I've only done it accidentally.