What's your way of dealing with Reinhardt + B.Lyn on AR defense?

I use this H!Kagero build. I used a unit builder as I didn’t want to screen-shot the build on my other account and login to Gamepress.

Myrrh with Iote's Shield.

I haven't read up on how AI works yet to formulate a proper defense strat... but with what I've got I'd probably make a DD3/Guard/Deflect Missile Micaiah paired with a Def Tactic/Drive Def partner. An ideal position would be to force either 'Ryn' to attak and then get smacked back.

If I had H!Henry, I would give him the Raven+TA set with 1~2 Wary fighter supports all packed in the corner of the map.

I adapted my Nino to be a Reinhardt, B!Lyn and B!Veronica check with Gronnraven + TA + Bow Breaker + Distant Defense.
Also, you can use Sigurd or any lance unit with Berkut's Lance + Deflect Magic.

My +10 Soren can handle both of them, despite his low Def. He has Spd/Res Bond A slot and Atk/Def Bond seal to give him +5 to all his stats when beside an ally. Ally Support and one Owl bonus gives him a total of +9 to all stats, making it 37/60/49/30/42, and increases further with more adjacent allies.

I use PA! Inigo with TA + Bow Breaker + Gronnraven + Distant Defense Seal

Or H! Henry with the same build

I move Kliff forward

My Sheena can deal with both no problem

Smolzura as a bonus unit is more than enough to take them on with her Bond-Skills active, no?

Raigh On Defensive Tile

TA raven bowbreaker + fort cav cecilia pretty much eat them alive.