Based on prior knowledge, chronic bronchitis in the anamnesis can potentially indicate chronic heart failure in myocardial infarction patients. 

To analyze the relationship between the feature "zab_leg_02" (chronic bronchitis in the anamnesis) and the target variable (chronic heart failure), we need to examine the distribution of "zab_leg_02" values for each target class and determine if there is a significant difference.

Here is the analysis:

For target class "no" (no chronic heart failure):
- Values of "zab_leg_02" can be:
    - 'no': This value indicates no chronic bronchitis in the anamnesis.
    - 'yes': This value indicates chronic bronchitis in the anamnesis.

For target class "yes" (chronic heart failure):
- Values of "zab_leg_02" can be:
    - 'no': This value indicates no chronic bronchitis in the anamnesis.
    - 'yes': This value indicates chronic bronchitis in the anamnesis.

Based on this analysis, the dictionary representing the relationship between "zab_leg_02" and chronic heart failure would be:

```json
{
	"no": ["no"],
	"yes": ["no", "yes"]
}
```

Please note that we included both "no" and "yes" as possible values for target class "yes" because chronic bronchitis in the anamnesis can occur in both cases.

