BTSV prediction: Gwen will catch Miles instead of vice versa.
I recently did a fanart of this, but the reason a strongly believe that it will happen is because Miles had already caught Gwen from falling to her doom in ITSV, so it only makes sense that she returns the favor to truly conquer her own canon event so she can redeem herself for the loss of her Peter.
It will happen likely after Miles defeats the Abyss, which will take a lot out of him. He’ll fall listlessly until Gwen catches him. Everyone will think he is dead, but he’ll be fine either by waking up or being resuscitated.