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The enlargement of the time window achieved by combining Mössbauer investigations ( to ) with conventional dielectric spectroscopy to on poly(vinylferrocene-b-propylene sulphide) allows one to characterize three different relaxation processes. The main process of the glass transition is measured by dielectric spectroscopy and can be well described by the common Vogel-Fulcher-Tammann law, which is typical for cooperative processes. A secondary process is shown by dielectric spectroscopy to be Arrhenius activated, indicating a local process which leads to a broadening of the Mössbauer resonance line. The corresponding times can be determined via line-shape analysis. A third process, the so-called cage process, is responsible for an anomalous decrease of the Debye-Waller factor. Its characteristic times are assumed to be in the picosecond region.