From where I'm sitting there's much confusion over where and when the church scene was filmed, inside and/or out. IMDb says North Hollywood on Moorpark and Colfax. Google maps shows absolutely no foliage across the street, which means all flora in this image was potted or fake. This reduces the likelihood of deleted exterior shots, unless they used a matching car somewhere else.
I rather doubt they risked sneaking Karen Allen into New Haven in early summer before her Comic-Con reveal, as rumored, or returned there.
calls theirs a progressive church, as evidenced here