The meaning is the same, that the Messenger of Allah ﷺ entered upon her and found a man with her. Hafs added that this troubled him and his face changed. Then both narrators agree on the rest.She said, "Messenger of Allah, he is my brother through breastfeeding."He replied, "Consider carefully who your brothers are, for breastfeeding is only valid when it satisfies hunger."
حدثنا حفص بن عمر حدثنا شعبة ح و حدثنا محمد بن كثير أخبرنا سفيان عن أشعث بن سليم عن أبيه عن مسروق
المعنى واحد أن رسول الله ﷺ دخل عليها وعندها رجل قال حفص فشق ذلك عليه وتغير وجهه ثم اتفقا قالت يا رسول الله إنه أخي من الرضاعة فقال انظرن من إخوانكن فإنما الرضاعة من المجاعة
etc.Reference: Bukhari, Shahadat, chapter on testifying about lineage, from Muhammad bin Kathir, hadith 2647, and Muslim, Rida, chapter titled "Suckling is only that which relieves hunger," hadith 1455, from the hadith of Sufyan Thawri, through him.