What does it mean to ask the hotel "is there a commission" when the travel agency makes a reservation for a guest? When the hotel says breakfast is included, does it usually mean two breakfasts or one

What does it mean to ask the hotel "is there a commission" when the travel agency makes a reservation for a guest? When the hotel says breakfast is included, does it usually mean two breakfasts or one breakfast? If the travel agency asks the hotel "is there any commission", it is unprofessional to ask. The price that the hotel gives to the travel agency is lower than the price that the hotel sells to the guests. If the travel agency wants to make a profit, it will add money to the settlement price given by the hotel and report it to the guests. If the hotel gives the travel agency an advance price, it will include double the advance price unless otherwise specified.