Based on prior knowledge, the time elapsed from the beginning of the heart attack to the hospital (TIME_B_S) might have an impact on the development of chronic heart failure. In general, the longer the time between the onset of the heart attack and hospital admission, the higher the likelihood of complications and the progression of chronic heart failure. However, without specific medical data, it is difficult to make a definitive conclusion.

Based on this analysis, the dictionary representing the relationship between the feature TIME_B_S and the target variable is as follows:

```json
{
	"no": ["2-4 hours", "less than 2 hours", "4-6 hours", "6-8 hours", "8-12 hours"],  
	"yes": ["more than 3 days", "more than 2 days", "12-24 hours", "more than 1 days"]
}
```

Note that the values included in the dictionary represent the possible categories of the TIME_B_S feature for each target class. It is important to note that this analysis is based on general assumptions and without specific medical data, the relationship between TIME_B_S and chronic heart failure cannot be accurately determined.