a question about a nick combo I've been thinking to use

If it helps people here or future visitors, there's a recent thread about using a Bonus Action mid-action: Do you get to know if an enemy died before deciding to smite or not?

I included more related threads in reply #18. For convience, pasted below (one converstaion was with VerilyRaze, indeed) 

And I'd like to clarify that my understanding is the same as jl8e and Smite are explaining.

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- Dual wield, Nick and light weapons. - (starting from comment 59)
- Equip or Unequip a weapon - once per attack or once per Attack [Action]? - (starting from comment 120)
- Nick debate SOLVED -  (comment 23)
- Nick debate SOLVED - (starting from comment 41)
- Nick debate SOLVED - (comment 57)
- Nick debate SOLVED -  (comment 72)
- Two-Weapon Fighting v Two-Weapon Fighting Style v Dual Wielding - (starting from comment 14)
- Eldritch Knight / Valor Bard + Nick mastery - (comment 71)

I say this makes sense, as I’ve done something similar with a scimitar/shortsword combo.

Quote from VerilyRaze>>

You're confused about the distinction between lowercase and uppercase 'action'. Lowercase 'action' refers to the activities you can do. If the Bonus Action lets you do something, it lets you perform an action. That action is bound by all the rules of any other action - including the "One Thing At a Time" rule (which covers lowercase 'actions' not just uppercase 'Actions'). Again, that section of text is not meaningless garbage. It's actual rules text that not only has a purpose but a fairly clear one: to simplify the rules by making actions atomic.