In an e-mail published on the Highland Council's e-planning file for this application Transport Scotland give the planners their reason for asking for an extension to the consultation period:
"The response time will obviously be dependent on the outcome of our audit of the TA. This process would have been assisted had ARUP consulted Transport Scotland when seeking to agree the scope of assessment, particularly given the potential for the proposed development to impact on a sensitive part of the trunk road network. Notwithstanding this, we will liaise with ARUP as necessary and would anticipate being in a position to respond before the end of February."
Gurnites can also read the latest objections to the proposal here on the Highland Council e-planning site.