When Total Access Detective compares tables, it examines all the table properties and shows those with differences.
Tables do not have a Linked property that's True/False. They have a Connect property which is blank for a local table and a value for linked tables. The value of the Connect property contains information on the linked database, source table and other connection related values.
Therefore you can easily see a linked table (Connect property has a value) versus a local table (Connect property is blank):
By comparing Connect properties, Total Access Detective also shows tables that are both linked but to different databases and/or tables.