together, both the anvil and the hammer

While two creatures with this feat are within 5 feet of each other, they each gain +1 to attack rolls.

additionally When a creature with this feat is targeted by an attack, before rolling to hit, another creature with this feat may use their reaction to use the following effect.

This character may move up to 5 feet. If this movement places them within 5 feet of the attacker, the attack is resolved against them instead of the original target.

The interposing creature reduces the damage taken by an amount equal to their proficiency bonus