May one remove the head tefillin from the bag before putting on the arm tefillin?

Synopsis

There is an opinion that even taking the head tefillin from the bag before the arm tefillin is on is forbidden. The Rema extends this: even when both are outside the bag, one should not prepare (unwrap) the head tefillin before putting on the arm tefillin.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

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