Discrepancies regarding the story of Safi Ibn Sayyad

I have some questions regarding the story of Safi Ibn Sayyad. It is narrated in: https://sunnah.com/bukhari:1354 , we understand that this young boy named Safi ibn Sayyad was accused of possibly being the Dajjal. The rasool (swl) considered this as a mere possibility, yet, I find many discrepancies with this. For starters, at this current time, this boy was from Medina, yet, the rasool (swl) had stated that one of the criteria of the Dajjal's character, is that he cannot enter Mecca or Medina. Secondly, in the following narration: https://sunnah.com/muslim:2920a , we find that the Dajjal will not emerge until the conquering of Constantinople, yet, the rasool (swl) had considered the possibility that Safi ibn Sayyad could have been the Dajjal? Even though he was from Medina, despite the fact Constantinople had not been conquered, wouldn't such criteria immediately disprove the fact that he is the Dajjal? Thirdly, in the following narration: https://sunnah.com/muslim:2942a , we find that a group of former Christians had seen the Dajjal chained down on another island far from Arabia, yet, suspicions were cast on Safi Ibn Sayyad of being the Dajjal? We know that for example, Umar RA and his family swore by Allah that Safi Ibn Sayyad was the Dajjal and Umar RA swore in front of the rasool (swl) and he had remained silent, showing that the rasool (swl) felt it may be possible too. Yet, all these findings and signs about the Dajjal completely point out the contrary to Safi ibn Sayyad being the Dajjal. How could it even be possible that the great companions, let alone, the rasool (swl) would even consider this a possibility? Lastly, we have the following narration: https://sunnah.com/muslim:2927c that shows that even after the death of the rasool (swl), the companions had considered this to be a possibility. How is this even possible? So many signs, prophecies, and so fourth completely pointed in an opposite direction towards Safi Ibn Sayyad being the Dajjal, yet, why and how could the rasool (swl) even consider such a possibility? I would appreciate it if someone was able to give a detailed response to all of the questions that have been aroused. This to me feels like an extremely compelling theological problem and I would like to be able to dismiss it somehow.