ZD Getting up at 5 AM for a Daf Yomi and davening at 6 AM. Unless you sleep in the Bais Medrash it’s going to take you 30 minutes to get showered and dressed and drive there. It’s going to be hard to cover the daf in the remaining 30 minutes. Also the earliest you can put on Talis and Tefillin in Brooklyn NY today is 6:09.
MA I didn’t know Reform Synagogues have minyanim during the week.
I assume this is referring to Shacharis (morning prayers) as 45 minutes is kind of long for Mincha (afternoon prayers) even in a Yeshiva.