Since we're down to four teams, that means two from the NFC and two from the AFC, and the Super Bowl can only be NFC vs AFC.
Based on the current playoff picture, the four teams still alive are:
NFC:
• Seattle Seahawks
• Los Angeles Rams
AFC:
• New England Patriots
• Denver Broncos
All possible Super Bowl matchups
(4 total)
Because each NFC team can face either AFC team, the possibilities are:
1. Seahawks vs Patriots
2. Seahawks vs Broncos
3. Rams vs Patriots
4. Rams vs Broncos
Which of these have NEVER
happened in a Super Bowl?
• Seahawks vs Patriots – Never happened
•Rams vs Broncos – Never happened
Rematch possiblity
• Rams vs Patriots – Yes, this has happened twice
(Super Bowl XXXVI & Super Bowl LIII)
• Seahawks vs Broncos – Yes, this happened (Super Bowl XLVIII)
Summary
Never-before-seen Super Bowl matchups:
• Seahawks vs Patriots
• Rams vs Broncos
Rematches:
• Rams vs Patriots
• Seahawks vs Broncos