Something is definitely not right with the companion reaction banter. I'm in the final half of Act III and I've been through several major plot points in the last couple of days, and have been to new significant places. Sometimes, some companions have something to say but others don't, which isn't how things worked in Acts I & II. Lae'zel's chatter is completely stuck and she hasn't had anything to say to me for quite a while now.
Also, I've got a second character playthrough, I'm in Act III, and Gale has a dialogue option permanently in his choices referring
to Nightsong. I completed that bit of the story ages ago and Dame Aylin and Isobel have left to help refugees, but I still have the option to ask him if he thinks the Nightsong relic might help with his orb problem.
Would love these things to be fixed soon.
