Related for Pesachim 203:6
דאפילו דברים שטעונין ברכה לאחריהן במקומן טעמא דהניחו מקצת חברים אבל לא הניחו מקצת חברים כשהן יוצאין טעונין ברכה למפרע וכשהן חוזרין טעונין ברכה לכתחלה
of R'Judah['s view], [viz. ,] that even for things which require a blessing after them in the same place, it is only because they left some companions behind [that these additional blessings are not recited]; but if they did not leave some companions behind, when they go out they need a blessing beforehand, and when they return they need a blessing at the beginning. It was taught in accordance with R'Hisda: If companions were reclining to drink wine and they arose [departed] and returned, they need not recite a blessing [anew].<span class="x" onmousemove="('comment',' V. supra p. 538, n. 3. According to Rashbam the proof is obvious. On the view of Tosaf. 'to drink wine' must be deleted, the reference being to bread or the five pieces of grain.');"><sup>3</sup></span>