The given chemical reaction can be broken down into the following steps:

Step 1: C2H6 + Br2 → X1
Step 2: X1 + H2O → X2
Step 3: X2 + [O] → X3
Step 4: X3 + Ag2O

In step 1, ethane (C2H6) reacts with bromine (Br2) to form an intermediate product X1.
In step 2, X1 reacts with water (H2O) to form product X2.
In step 3, X2 reacts with an oxidizing agent ([O]) to form product X3.
In step 4, X3 reacts with silver oxide (Ag2O).

The overall chemical reaction can be represented as:
C2H6 + Br2 → X1
X1 + H2O → X2
X2 + [O] → X3
X3 + Ag2O

This series of reactions represents a multi-step reaction where each intermediate product formed in one step further reacts in subsequent steps to form the final product.