7.-What is the "oversize route"

Due to the limitations of the TDA channel, there is a maximum file size that can be shared through it.  

Depending on the office, it could be 50 or 100 Mb. For those, the file needs to be manually prepared (by the TDA OFF) and then shared through a special SFTP.  

This delays the delivery of the file to the OSF, between 2 and 5 days (in average but sometimes it could be longer).