Sefer Baal Shem Tov Bereishit 114 ( Tzavaat HaRivash):
Also, serve God with all your might, because everything is “required [for Above].” 3 God wishes to be served in all possible ways. This means the following:
Sometimes one may walk and talk to others and is then unable to study [Torah]. Nonetheless, you must attach yourself to God and effect yichudim (unifications). 4 So also when on the road, thus unable to pray and study as usual, you must serve [God] in other ways.
Do not be disturbed by this. For God wishes to be served in all possible ways, sometimes in one manner and sometimes in another. That is why it happened that you had to go on a journey or talk to people, i.e., in order that you serve Him in that alternate way.
The Baal Shem Tov believes human beings have the capacity to multitask. We have the ability to talk to someone and be able to focus on G-d. This is illustrated by many stories of great rabbis, in the midst of a conversation with another person, the rabbi would be able to give the person full attention while also be focused on G-d. Or the tailor who works on fixing garments while in the meantime is focus on unifications (Yichudim).
The question for today is; Is the Baal Shem Tov really assuming this is a possibility for all people or is this the level of great people, while the rest of us are not capable of such singlemindedness? In my opinion, I do believe this line can be read and incorporated into any individual’s daily practice. However, as is a noted argument amongst historians of Hasidism, I am not convinced that the Baal Shem Tov would have considered this to be for the general public, rather this was an idea that would be for the aspiring elite.