John Reynolds played the drums in all the concerts and few times I managed to hang out with the musicians after saying "hello" to Andrea lol.
Long story short, he used to be married to Sinead O'Connor a long time ago, the remained best friends!
He told me that Sinead and Andrea were kind of recording their albums at the same time, in the same studio, with the same musicians hehehe. So it was kind of a coincidence, to be honest, an extraordinary coincidence IMO.
You can see when Sinead released her album "I'm Not Bossy, I'm the Boss", she kept Andrea's whole set of musicians
https://www.youtube.com/watch?v=jMzY_KQIKjU
Miguel
nexi_exi17