In large pot of boiling, salted water, cook pasta for about 8 min.
Meanwhile, cut broccoli into small florets. Trim stems and cut into slices.
Cut chicken into 2” chucks; set aside.
Stir broccoli into pasta in pot and cook for 1 minute. Drain and set aside.
Whisk flour into Milk and pour into same pot stirring constantly for about 5 minutes or until sauce is thickened and chicken is just slightly pink inside.
Reduce heat to low, add cream cheese and return pasta and broccoli to pot.
Stir gently until chicken is no longer pink inside, cream cheese is melted and pasta is heated.
Stir in vinegar and season to taste with salt and pepper.
