Based on prior knowledge, we can analyze the relationship between the feature "DLIT_AG" (Duration of arterial hypertension) and the presence of chronic heart failure in myocardial infarction complications data.

To analyze this relationship, we can examine the distribution of different values of "DLIT_AG" for patients with and without chronic heart failure.

Here's the dictionary with the analysis:

```json
{
	"no": ["there was no arterial hypertension", "more than 10 years", "6-10 years", "three years", "two years", "one year"],

	"yes": ["more than 10 years", "6-10 years", "three years", "two years", "one year", "five years", "four years"]
}
```

Based on the analysis, we can see that the presence of chronic heart failure is associated with a wider range of values for "DLIT_AG" compared to its absence. Patients with chronic heart failure can have longer durations of arterial hypertension, including "five years" and "four years", which are not present in patients without chronic heart failure. However, it is important to note that the value "there was no arterial hypertension" is not present for patients with chronic heart failure.

Remember, this analysis is based on prior knowledge and may vary depending on the specific dataset and its characteristics.