The randomness of Boss mech can cause vuln you can't avoid?

[Singularity]

I'm saying when it overlaps with the expanding aoe attack the mob does, there is a random order to the placement of the cacti and a random order to the aoe's that the mob uses and it seems some times these two can end up with a config where you physically cannot avoid one of the two attacks, as in one of the the two cacti or sometimes both with out the flower are smack bang in the middle of the bosses aoe attack telegraph so you have to functionally be hit by one of the two attacks. That's what I mean.

In that pattern, the radial attack goes off before the cacti explode. If you identify a wide enough safe spot near a non-expanding cactus, you have time to move after the radial AoE disappears.