This table shows teams that are connected by a concatenation of games. That is: If team A plays team B, and Team B plays Team C, then Team A is connected by concatenation with Team C, even if A doesn't play C. (In school you called this a "transitive" relation).
Each of the 2 columns contains a list of connected teams. Teams within each column are connected with each other, and are not connected with teams in any other column. The teams are grouped by conference name (the bold text) and alphabetically within conference.
The link from each team name leads to a page that displays the concatenation details between two selected teams (with the one of the teams defaulting to the team you picked in this page). You can also click here to go to the game concatenation details page with no default team selected.