When it comes to closing a deal we don't need to think in terms of "sides". Notaries in Quebec represent both the buyer and the seller and take them through the legalities of fulfilling the contract in the interest of both. Only one Notary is involved. Closing is not necessarily an adversarial process. Where there are "sides" is when the contract is being negotiated and interests are diametrically opposed - higher price v. lower price; solid reps and warranties v. weak ones, etc.. 
The existing, but anachronistic, realtor business model does not recognize this, even when two realtors are involved. The more his/her client pays the more the purchaser's agent makes. The model makes Realtors fiduciaries to getting a deal, any deal, signed. They aren't fiduciaries to you.