Incidental Contact??

[Just Curious]

Under the double first base guidelines, it would seem implied that one reason for the double bases is to avoid collisions between the BR and F3..
Sitch.. F3 is straddling the white bag with one foot, in the dirt, on the baseline from 1B to 2B and the other on the orange bag.. A non-malicious collision occurs due to the close play at 1B.
F3 has the ball before hand, BR out, no obtruction, but the collision is hard and both F3 and the BR go down pretty hard..
From basketball, if there's no advantage gain by one player over another and regardless of the medical outcome (Scapes, cuts, broken bones), we have a case of incidental contact.
Is that what we have here? Or is there a penalty for taking up too much real estate by F3. The throw from F5 was on the money, so this is simply a case of positioning by F3.