Travel / Poznan bus & train stations [9]

hey...

im arriving in poznan by bus at about 3.30am from south of poland! can any one tell me if the bus & train station are one and the same? or how far it is from the bus stop as it were to the central station in poznan? (poznan glowny) to then get a train to berlin!!

thanks

woof woof (the dog)

xxx