The spell Wind Wall is pretty handy for deflecting projectiles:
Arrows, bolts, and other ordinary projectiles launched at targets behind the wall are deflected upward and automatically miss.
But the two of the Arcane Shot options of the Arcane Archer can't miss.
The Piercing Arrow option says:
[...] When you use this option, you don’t make an attack roll for the attack. [...] [...] The arrow passes harmlessly through objects, ignoring cover. [...]
And the Seeking Arrow option says:
[...] When you use this option, you don’t make an attack roll for the attack. [...] [...] The arrow flies toward that creature, moving around corners if necessary and ignoring three-quarters cover and half cover. [...]
Now, neither of these seem to be written with the possibility of Wind Wall in mind.
Ultimately, I want to know if either of these can pass through or circumvent Wind Wall? I can see multiple arguments either way: that arrows with Arcane Shot options applies aren't ordinary, that the wall of wind is not an object, and that it would be treated as giving full cover. Or possibly, depending on field of battle, that the seeking arrow having to travel 80+ feet around the sides runs out of 'range' (Although it's unclear which range the arrow uses), as the ability doesn't mention going up and over cover (if it did, it could ignore full cover, right?).
So which wins? The immovable Wind Wall, or the unstoppable Arcane Shot?