Antman glancing when Locked on

Can someone tell me how Antman can glance against Falcon attacks while he is locked on?
Even max sig Antman has ~60% chance to glance and Falcon Lock on reduce defensive aa to 100%, but Antman still able to glance.
Is this a bug or I am missing smth?

Even max sig Antman has ~60% chance to glance and Falcon Lock on reduce defensive aa to 100%, but Antman still able to glance.
Is this a bug or I am missing smth?

1
Comments
Glancing applies before that and hence prevents falcon from applying the AAR of his locked on.
Glancing is affected by aar is easily testable using champs like quake and archangel
Or
The abilities do not interact with locked on correctly.
I don't know the specifics
In arenas, various abilities gets triggered while locked on, which aren't suppose to happen.
I can be wrong on Few interactions but not the multiple times I face it.
Heimdall synergy, hercs immortality, ihulks immortality. These get triggered often while I am attacking without a pause.
Personally I don't use him much. Just my observation for many many many months.