I did! We used British Airways points and the companion pass we earned for making the required spending on the card. I had DH apply for the BA card again last year when they were offering 100,000 miles. It was $30K spend to get the companion pass but we managed it through manufactured spending and 4 Bluebird accounts shut down LOL Since we were using the companion pass only one of us had to use points but we did have to pay the dreaded taxes and fees for both. First class from MIA-LHR and business from LHR-FCO since it is a 2 cabin plane and has no first class cabin was 115,000. VCE-LHR in business (2 cabin plane), LHR-MIA in first was also 115,000. My mom is also going with us and I got her tickets in business and those were 90,000 miles. BA charges an arm and a leg in taxes and fees when you connect through London. So it's like paying for your flights at a cost that is still less than an economy ticket but using your points to fly up front. We had 2 years to use the companion pass and and I figured our next ABD in 2018 would be to China so BA would not be the airline we'd be using. Therefore, we made use of it this year.
Alitalia flies to Rome from many places and they are in the Sky team alliance so they partner with Delta. Amex membership reward points transfer to Delta. Korean Air is also Sky Team and Chase Ultimate Reward points transfer to Korean.