In the Tools section of www.krackattacks.com it states:
We remark that the reliability of our proof-of-concept script may depend on how close the victim is to the real network. If the victim is very close to the real network, the script may fail because the victim will always directly communicate with the real network, even if the victim is (forced) onto a different Wi-Fi channel than this network.
This appears to infer that the attacker has to rely on ‘overcoming’ the access point’s signal strength in some way for the attack to be successful.
If we assume that only standards compliant antennae are used for the attack is there a practical distance or rule that can be applied to determine whether an attack is likely to be successful (assuming the connection is susceptible)?