Operator $or(query) and operator $(projection) don't work together.

db.users.find({

                            $or: [

                                {

                                        _id: senderId,

                                        "_contacts._profile_id": recipientId

                                },

                                {

                                    _id: recipientId,

                                    "_contacts._profile_id": senderId

                                }

                            ]

},

{

"_contacts.$": 1

})