Projective conic generated by a set of tangent triangles.

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I need to proof the following result:

Let C be a real projective conic and P, Q two points interiors to C then there is another real projective conic such that every triangle inscribed on that conic with two of its sides passing throug P and Q respectively have their third side tangent to it.

(It might be useful to consider its dual version)

Can you think about any strategy to solve it?