The ornamental design for combined cooler and table, as shown and described.
1. Combined cooler and table
1.1: Isometric (top, front, left)
1.2: Isometric (top, front, left, open position)
1.3: Isometric (bottom, back, right, open position)
1.4: Front
1.5: Left
1.6: Top
1.7: Bottom
The back side view is omitted because it is a mirror view of the front view; right side view is omitted because it is a mirror view of the left side view; the parts shown in white color and delineated with dashed lines form no part of the claimed design.