I would 'assume' that it leads back to your 'box of many buttons'(sometimes referred to as an 'entertainment console' switchbox), that allows you to choose which TVs see what type of signal - Antenna, Cable, or DVD player(which may be a central DVD mounted above the kitchen sink area for you).
Many manufacturers may be supplying TV areas with an HDMI cable now, versus the traditional COAX cable, as mine has.
'14 Palazzo 33.3 bunkhouse 34' diesel
KingTailgater2 Dish HD, 100w/5a SOLAR, BlueOx
100,000+mi since '14 - US, Alaska, Canada - Northwest, GA! (also, '14 Gulfstream Amerilite and '07 ForestRiver Rockwood) : )