Quick questions: javelins with dueling style and natural weapon proficiency

[SpanielBear]

Permission is not an issue. I am not trying to skip permission or rules. I am just identifying what exactly counts as an attack when that kind of granularity or specificity is required.

So if you present all 3 steps to me collectively we can count that as an attack. Step 3 has an attack roll.

If you ask me when exactly in that 3 step process the attack specifically occurs, the rule will zero in on the attack roll as what definitively counts as an attack.

Nope, I do not ask you where in that chain the attack occurs.

The chain is the attack. This can be shown in two ways.

A) an attack cannot occur without all steps in the chain being met,

And

B) the chain is defined by the RAW as the simple structure of an attack. (Phb pg. 194)

So, an attack by a thrown weapon is an attack with a one handed weapon. Following all the steps of an attack (as no step can be excluded, as you yourself have shown), it satisfies all the conditions to meet the requirements of duellist. Therefore, the bonus damage granted by duellist applies. Q.E.D.