Based on my prior knowledge, a third-degree AV block on ECG at the time of admission to the hospital can be an indicator of chronic heart failure. Therefore, there is a relationship between the feature "n_p_ecg_p_06" and the presence of chronic heart failure.

To analyze the relationship further, we need to examine the values of the feature "n_p_ecg_p_06" for each target class ("no" and "yes") in the myocardial infarction complications data.

Based on the provided information, we can create the following dictionary:

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

Since "n_p_ecg_p_06" is a categorical variable with only two categories ("no" and "yes"), there is only one possible value for each target class. Therefore, the lists for both target classes contain a single value, representing the presence or absence of a third-degree AV block on ECG at the time of admission to the hospital.