How to setup Stm32G0 ADC to read 17th Channel (with "not fully configurable sequencer").

I have trouble reading from 17th channel of STM32G0B1 MCU, which is PC4 pin.

I have to read from channel 0 and 17. If I configure ADC for single channel it reads fine from Ch0, but cannot read from Ch17 (I got value from Ch0 instead). If I configure it to read from Ch0 and Ch17 using DMA, values in DMA array are not changing at all.

I share cube-generated MX_ADC1_Init below

static void MX_ADC1_Init(void)
{
 
 /* USER CODE BEGIN ADC1_Init 0 */
 
 /* USER CODE END ADC1_Init 0 */
 
 ADC_ChannelConfTypeDef sConfig = {0};
 
 /* USER CODE BEGIN ADC1_Init 1 */
 
 /* USER CODE END ADC1_Init 1 */
 
 /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
 */
 hadc1.Instance = ADC1;
 hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
 hadc1.Init.Resolution = ADC_RESOLUTION_12B;
 hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
 hadc1.Init.ScanConvMode = ADC_SCAN_SEQ_FIXED;
 hadc1.Init.EOCSelection = ADC_EOC_SEQ_CONV;
 hadc1.Init.LowPowerAutoWait = DISABLE;
 hadc1.Init.LowPowerAutoPowerOff = DISABLE;
 hadc1.Init.ContinuousConvMode = DISABLE;
 hadc1.Init.NbrOfConversion = 1;
 hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
 hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
 hadc1.Init.DMAContinuousRequests = DISABLE;
 hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
 hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_160CYCLES_5;
 hadc1.Init.OversamplingMode = DISABLE;
 hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_LOW;
 if (HAL_ADC_Init(&hadc1) != HAL_OK)
 {
 Error_Handler();
 }
 
 /** Configure Regular Channel
 */
 sConfig.Channel = ADC_CHANNEL_0;
 sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
 if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
 {
 Error_Handler();
 }
 
 /** Configure Regular Channel
 */
 sConfig.Channel = ADC_CHANNEL_17;
 if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
 {
 Error_Handler();
 }
 /* USER CODE BEGIN ADC1_Init 2 */
 
 /* USER CODE END ADC1_Init 2 */
 
}

I couldn't find any example how to use ADC with "not fully configurable sequencer". I can live with polling for Ch0 and Ch17 separately, but also have no clue how to make it work.

Best regards