Faith one quation

The old Bottled faith (if its still work as expected) give aditiional 2% crit chance at top, and the new one instead increase crit chanse by 150% at top.

If theoreticaly i use both old and new, do i get +2*1.5% = 3% critchance? or they are woud replace effects of each other? How this gonna work?

UPD: or 2 players use different flasks to create death field on the groud with both effects?