Christi already said it,
you will have expanded effects. These may go well for some time, but also may get unstable and overload the system faster.
Here combining two practices never worked longer than for half a year, but they worked best if one practice type (e.g. pure AYP) was in the morning and the other e.g. the one from that guru was at a seperate time, like in the evening.
Every system has a special intention of the movement of prana in the body-mind and the dissolution of prana into silent bliss and their relating amount for each session. Mostly the practice is designed in a way that the overall routine is stable with good results. If you start mixing two systems into the same routine you will have two intentions mixing with mostly some effect-cancalation on the one hand, some effect-intensification on the other + some instable mixture-leftover which sooner or later may become problematic.
All in all, this forum is one of the best places to test out and report back the results as it helps the tester to see for himself and others to know what they may not need to test out
The experience here is, digging in one stable place is best, but not so easy to decide the beginning months and years =)
Happy practicing
