BS”D:
SJS:
Rashi there says that acc. to R’ Hillel, Hashem himself will be the redeemer, similar to Hashem himself enacting Makas Bechoros (my addition). The Gemorah rejects this due to their being pesukim in Zecharia that there will be a physical redeemer.
Since I don’t know what will happen when Hashem redeems us (BeKarov), I don’t have the expertise to describe what exactly will happen.
Your example is just one of many that show disagreements in Metzius (what happened, does happen, will happen) among Chazal. I don’t feel the need to reconcile the opinions.