Siman 166
Presented here for study, not as a practical ruling. The Shulchan Aruch rules by Sephardi custom, the Rema's glosses by Ashkenazi custom, and the Kitzur follows Ashkenazi custom. For a practical question, ask your rabbi.
א יֵשׁ אוֹמְרִים שֶׁאֵינוֹ צָרִיךְ לִזָּהֵר מִלְּהַפְסִיק בֵּין נְטִילָה לְהַמּוֹצִיא, וְיֵשׁ אוֹמְרִים שֶׁצָּרִיךְ לִזָּהֵר, וְטוֹב לִזָּהֵר. וְאִם שָׁהָה כְּדֵי הִלּוּךְ כ"ב אַמָּה, מִקְרֵי הֶפְסֵק (תוס' פ' אֵלּוּ נֶאֱמָרִים).
1 There are those who say that one need not be careful about pausing between washing and [the Brachah of] Hamotzi, and there are those who say that one needs to be careful [and there are those who say] it is good to be careful. (The amount of time equivalent to walking 22 cubits is considered a pause) (Tosefos Perek Elu Ne'emarim).