You can have your 2 teaspoons of oil at the same time (for example if you need to cook with them or poor them onto a salad etc.) it'll still be 1 point per teaspoon, so 2 points total.
A point is a point is a point, no matter what it's eaten with or when it's eaten. A point's worth of oil combined with another point's worth of oil is still just two points' worth of oil
(Of course, I should confuse things further by mentioning that the 'point is a point is a point' rule doesn't always hold for man-made 0-point foods... )