I'm arranging the second movement of Ravel's Ma mere l'Oye for recorder ensemble. There are two parts for tenor recorder, and I'd like to combine them into one written part. Sometimes, the two parts are identical, and sometimes, they're different enough that it would be awkward to put them on one staff. However, they won't fit on a single page if I use two staves throughout.
Is there a way to combine the parts so that they will share a single staff when the parts are identical, but use separate staves when the parts differ?