Arch-Glacor: back-to-back arms clip at 4000% enrage (Melee)

Since I don't think this happened during the gold Iceborn title kill, thought I'd try to get a clip of clearing back-to-back arms afterward. The rotation has been revised over each attempt since I haven't actually seen the back to back spec very frequently.
General strategy for the second arm:
Since berserk and devotion are on cooldown: do a bleed rotation and build into a barricade
If able to tank the magic damage from the exposed core just long enough, barricade could overlap and cover the remainder of devotion's cooldown. This would allow devotion and deflect magic prayer to be used at the end of barricade and give a lot of extra time to clear it.
The timing for barricading may be different depending on how fast the clear was on the first arm. This run was basically testing how survivable it would be if the first arm was cleared pretty quickly after devotion was used (expecting to tank harder hits during the second arm because of waiting longer for devotion's cooldown to dip below the maximum barricade duration). Reflect is just filler in an attempt to reduce some damage taken while delaying for the correct timing (otherwise could just build immediately into barricade and hope to clear it fast). Unfortunately, enhanced devoted and/or devoted perks went off on my vestment bottoms right before I swapped to the turtling 4 leg, so I can't quite see what the exact damage taken would have been at the point of barricading. It's common for them to activate off the rapid damage from the exposed core. It's uncertain if this would have been survivable just using brews (the damage ramps up fast). Bringing and using a vitality pot shortly after reflect would probably help surviving those few extra ticks.
Alternatively, it might be safer to just to make sure to clear the first arm a little slower after activating devotion or activate devotion a little earlier in the berserk rotation. It wouldn't necessarily be ideal for getting the last bit of berserk damage on arch-glacor, but it should start devotion's cooldown earlier and allow barricading before the damage ramps up as much (possibly not needing to delay with reflect).
I thought I was maybe a bit early on the barricade in the clip, but it looks like devotion would come off cooldown a tick before barricade runs out. (just on time)
Note: I did not actually try to use (limitless) devotion & magic deflect prayer after barricade in this clip because there was enough duration left to block the damage after clearing the arm. So, it is possible to just clear the second arm without needing devotion at all, but it does still seem like a good backup option if the damage falls short.
Don't do this: accidentally used gfury for building when I should really be using punish, flanking backhand, or slice since I didn't have the gfury for overpower then. That gave me a moment of oops when I tried to gfury it.

[@Matthewmellow2k]

Jesus. You’re a beast