It is perfectly all right to take two medications for the blood pressure.some times the even 3-4 drugs are used for the blood pressure control ,which is imperative after the angioplasty
Now a days, even 140/80 blood pressure is considered a bit on the higher side, and for a heart patient the NEW NORMAL blood pressure is below 120/80.
Also Concor is beta blocker
, it has positive effects on the heart ,more than just lowering the blood pressure,I am not sure why you were not on it before.
Do not worry about the tab number, you are on perfectly fine combination.