What are the halachic guidelines for behavior during Chazarat Hashatz? May one learn during Chazarat Hashatz?Those who are meticulous to fulfill the mitzvah of wearing both Tefillin of Rashi and Tefillin of Rabbenu Tam should be careful not to remove their Rashi Tefillin and put on the Rabbenu Tam Tefillin during Chazarat Hashatz. [1] This is because Chazarat Hashatz requires complete attention and participation, and any form of distraction or interruption even for a mitzvah.

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