Folding Tallit and Tefillin During Kaddish

Hi,
If someone is not in a rush during Shacharis, is it permitted for him to fold his tefillin or tallis while Kaddish is being said (whether by the shaliach tzibbur or by an individual)?

And if the person is in a rush, for example, he davened in a later minyan and knows that his wife may be struggling at home getting the children ready, would that be any different?

Shalom Uvracha,

It is forbidden to engage in any activity while Kaddish is being recited

and even to think about other matters during this time is prohibited. 

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