I've engaged in an offline discussion as to "which trumps which"
Davening Minchah alone BEFORE sh'qiah
Davening with a Minyan even after Sh'qiah
SA-Rema O"Ch 233:1
Ba'er Hetev 5
Mishnah B'rurah. 11,14
Biur Halach D"H "d'haynu"
Sha'ar Hatsiyyun 16,18,21
MB: "Lochein , l'chatchilah tzorich ... l'hitpalleil qodem sh'qiat Hahamah davqa"
Let's look at 2 similar scenarios and see how this applies. The specific "gray area" I have is "how to Pasqen scenario B" - especially in light of this MB..
Given - Scenario A
Minchah is scheduled to take place in shul AFTER sh'qiah.
So MB pashut says L'chatchilah daven Mincha at home before Sh'qiah
[Note: Others -like me say better go to minyan even after sh'qiah so long as before tseit. EG Rema, Kitzur SA]
Minchah is scheduled to take place in shul 15 minutes BEFORE sh'qiah. BUT the
Minyan is running late and it's 1-3 minutes before the z'man
Would MB consider this
1. a case of sha'at hadchak and would even he wait for a Minyan?
2. Would MB say it's STILL a lechatchilah and so it's time to daven now regardless even if it deprives the Minyan of tefillah betzibbur later on!?!
B1 says - the MB might allow the lechatchillah as having gone to shul and so now it's Sha'at Hadchaq.
B2 is saying the Lechathcilah is absolute.
* see B3 below
B1 might also say be mitztareif the other tzad [that of other sheetot] and use that as a s'nif l'haqeil since we're uncertain, [Dialetic]
B2 NO WAY! What part of Lechtchilah do you not understand? The MB would STILL insist in davening Minchah straight-away and sacrificing the later Tefillah betzibbur
[Absolute straight read of TEXT]
* There is a B3 of sorts namely - to consult Talmiddim of MB and determine what the MB himself would do. [Original Intent of author - regardless of the text]
Straight Read vs. Dialectic