I think they had a quick scene in the beginning of 5x13 and another one in the beginning of 5x16. Stop. Two scenes in six episodes. A tragedy.
It's very sad because certain audience members are using their lack of scenes to push the agenda that they have no chemistry, that they feel unmarried so they should break up, etc. I think the writers want to have their cake and eat it too. They want to have them married to introduce key elements like Nora but at the same time they don't want to show them married in order to not offend certain individuals.
I hope the next EP does better. Maybe if Flash weren't the highest rated show the writers would feel more bold, show more Iris/WA and shake up the formula.