Guardian. Immediately after a creature within 5 feet of you takes the Disengage action or hits a target other than you with an attack, you can make an Opportunity Attack against that creature.

We were having a discussion regarding this mechanic and would like some input.

Guardian has two parts. Creatures within 5ft of you disengage then you can OA. Creatures hit a target other than you with an attack then you can OA.

Is the the statement:

If (immediately after a creature within 5 feet of you takes the Disengage action) or (immediately after a creature within 5 feet of you hits a target other than you with an attack) then (OA against that creature).

or is it saying

If (Immediately after a creature within 5 feet of you takes the Disengage action) or (hits a target other than you with an attack) then (OA against that creature).

Basically, can someone with this feat that's outside of the 5ft (ranged, reach, ect...) still OA a target when that target hits someone other than them?

Thank you.

It's the first one. This feat does not allow you to make opportunity attacks against creatures that are more than 5 feet away from you.

The second interpretation does not really make sense in standard English, since it leaves the second part with no subject — i.e., if "a creature within 5 feet of you" only applies to the first part, then "hits a target other than you with an attack" doesn't refer to anything.

Also... ranged OA for this case?

Guardian. [...] you can make an Opportunity Attack against that creature.

Opportunity Attacks:

You can make an Opportunity Attack when a creature that you can see leaves your reach using its action, its Bonus Action, its Reaction, or one of its speeds. To make the Opportunity Attack, take a Reaction to make one melee attack with a weapon or an Unarmed Strike against the provoking creature. The attack occurs right before the creature leaves your reach. See also “Playing the Game” (“Combat”).