Tailfin's top tube bag and frame bag antitheft synergy

Hi, I am planning to pull the trigger with tailfins top tube bag and frame bag.

I would mostly use them for commuting, so I will lock my bike outside for a few hours everyday. Having that clear, I would like to make the set as hard as possible to be stolen.

I am able to bolt the Top tube bag on my bikes frame... so here comes the question, when bolting the top tube bag while using the straps needed to mount the frame bag, is it possible to steal the frame bag without unbolting the top tube bag first?

I am mostly worried for the frame bag as there is no tool needed to take it out, but with the combination of the top tube bag which I would have it bolted on, does the combo protect my frame bag?