פירוש על ברכות 53:4

This conclusion contradicts that arrived at in the preceding paragraph.

See p. 175 n. 10.

I.e. when R. Judah declares the afternoon Tefillah maybe read until the middle of the afternoon, be gives "until" the inclusive meaning; but be refers to the first half, which is 4.45. Up to that time he permits it, whereas the Rabbis allow it to be read the whole afternoon. Hence it is shown that although "until" means including, the opinions of R. Judah and the Rabbis differ.