Regarding hoilchai drochim this law only applies to bread see taz 178.9
From Siddur birchas hanenenin 9.11,12,13,14,15 see footnotes below for original sources
Regarding to go
Things that are borai nifashois if you take them to another place, having in mind only helps (not having to say another first brocho) if the second place is in the same house, or you can see the first place,
Does his borei nefashos automatically end his drinking session?
His leaving the place ends his drinking session
Can he have explicit intention to have it not apply to the coffee?
It is not good to say extra brochois (shulchan aruch harav 215.4)
Should he rather not make a borei nefashos at all until he finishes his coffee?
I guess so
