Continuity mistake: When Jimmy gets to Chuck's burned house and sees the coroner truck with his brother's corpse getting away after the beginning of the episode, a fireman is going to pass behind him, but when Jimmy turns to see again the burned house, the fireman has suddenly disappeared when it turns into a long shot. (00:13:32)
Continuity mistake: After the meeting and Howard pours a glass of drink for both him and Chuck, he walks to the end of the table and places his hands on a chair as he asks Chuck if he remembers Al McConnell. Chuck has just taken a drink and lowered his arm and glass down to the level of the table. The camera then cuts to Chuck and suddenly he's got his glass up to his face again. (00:12:25)
Continuity mistake: After Jimmy leaves Mike at the Los Pollos, Mike looks through is binoculars and is supposed to be looking at the mirror with them. The shot of the rear view mirror shows him looking off to his left however, not at the mirror as it should be. When the angle changes to the front, suddenly he's pointing the binoculars at the rear view mirror. (00:30:42)
Continuity mistake: The sun changes considerably when Mike is scoping out the garage. At the beginning of the scene it is late afternoon. When the larger truck pulls in it is closer to noon.
Answer: It is my opinion that you should absolutely watch Breaking Bad first. If you did not know, Better Call Saul takes place before the events of Breaking Bad. At the time I am posting this, BCS is mid-way through season 5, with season 6 on the way perhaps in a year. So if you binge Better Call Saul now, you would not be able to "flow" right into Breaking Bad. To me, it's better to watch in the order that they came out. Breaking Bad was a phenomenal show, and now watching Better Call Saul, it is fun to watch the events unfold and start to lead up to what we saw in BB. Enjoy.
jshy7979