Before we begin the Shemoneh Esreh each morning, we say the blessing, "Blessed are You, Hashem, Who redeemed Israel (Ga'al Yisrael)." Then within the Shemoneh Esrei itself, in the "Re'eh va'ahneynu" section, we conclude "Blessed are You Hashem, Redeemer of Israel (Go'el Yisrael)." Aside from the use of the past tense and the present tense, there doesn't seem to be much difference in the blessing. Moreover, as I understand it, our tradition is to not to say anything between the blessing of Ga'al Yisrael and the Shemoneh Esrei so that we don't make a break in the connected concepts of redemption and prayer. O.C. 66:7. What is the substantive difference between these two blessings, if any?