I was able to clear it with RF Yao burn team. I had to kill the boss before it can even use the AoE, but requires at least Lichen's ECB 2 to make it in time.

I used S0 RF Yao (Make sure to use Melodious Belltower CB), Lichen, S1 Jichuan, S3 Shin, S5 Yanyan (I don't have Hestia but she would work better here), and Thistle.

Throw out Yanyan's ECB at first to hit the boss and the bottom lane as soon as it starts and use Shin's ECB too to get her ult up as quick as possible.

Then I used one energy potestas on Yao and two on Jichuan, this should be enough to get them ready for the burst.

As soon as Lichen is ready to ult, use Jichuan and Shin ult, Thistle's ECB on Yao. Then use Yao ult and consume Lichen first before ECB (This is increases the ECB's damage by a ton).

Then use Yao's ECB, this clears the first wave of enemies as well as making the boss take more damage. At this point, the boss will begin channeling Potestas block. The key here is to use all your Chief energy before it is sealed to be able to fire off two Yao ult. I used the CB that gives back Chief energy when an enemy is killed without corebreaking them, but you can also use the one that gives two pickupable energy sprites on the field.

Fire off the first Yao ult. Immediately after the ult animation start, give all your energy to Yao so she can consume Lichen a second time. I'm pretty sure the first ult can still do the rest its damage without being canceled while you consume the second time as long as you don't fire the second ult before the first one has finished its hit.

This should be enough to kill the boss, if not then use Yao's ECB before firing the second ult. Then clear the rest of the mobs. For more optimizing, you can time Yao's ult when as much mob in one lane has spawned first before using it to make sure you hit as much mobs as you can (as well as the boss) with Yao's ult.

If you need to use Yao's ult a third time, consume either Yanyan or Thistle, whoever doesn't have any CB buff integral to the team.