  Massive gas outflows are considered a key component in the process of galaxy
formation and evolution. It is, therefore, not surprising that a lot of effort
is going in quantifying their impact via detailed observations. This short
contribution presents recent results obtained from HI and CO observations of
different objects where the AGN - and in particular the radio jet - is likely
playing an important role in producing the gas outflows. These preliminary
results are reinforcing the conclusion that these outflows have a complex and
multiphase structure where cold gas in different phases (atomic and molecular)
is involved and likely represent a major component. These results will also
provide important constraints for establishing how the interaction between
AGN/radio jet and the surrounding ISM occurs and how efficiently the gas should
cool to produce the observed properties of the outflowing gas. HI likely
represents an intermediate phase in this process, while the molecular gas would
be the final stage. Whether the estimated outflow masses match what expected
from simulations of galaxy formation, it is still far from clear.
