*-----------------*
|     MCData      |-
|MuoSimTXHitChunk |  -
|                 |    - 
*-----------------*      -
        |                  -      MuoMCUnpReco
        |                    -    HP, VS, PB
        |                      -  
        |MuoDigi                 -
        |                          -
        |                            -
        |                              -
       \ /                             \ / 
        v                               v 
*---------------*                   *--------------*
|               |MuoDigi to UnpReco |              |
| MuoDigiChunk  |<----------------->| UnpDataChunk |
|               |MuonUnp to DigiReco|              |
*---------------*                   *--------------*
        |                                 -
        |                                -
        |                              -
        |MuoHitReco                  -
        |                          -
        |                        -    MuoHitReco(new)
        |                      -        OP, HP, PB
       \ /                   -  
        v                  - 
*---------------*        -
|               |      -
|     MuoHit    |< - -          
|               |
*---------------*